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Home My WebLink AboutHPA - PLN General - 12/14/2020 ( �•, �� l.0 i� vt�Ol.� �i�fa toA MASON COUNTY >cvd <Cente COMMUNITY SERVICES Building,Planning,Environmental Health,Community Health 615 W.Alder Street—Bldg.8,Shelton,Wa 98584 Phone:(360)427-9670 Ext.352♦Fax:(360)427-7798 Mason County Flood Damage Prevention Ordinance #41-17 FDPO Development Permit Application The undersigned hereby makes application for a permit to develop in a designated floodplain area. The work to be performed is described below and in attachments hereto. The undersigned agrees that all such work shall be done in accordance with the requirements of the County Floodplain Ordinance and with all other applicable Local, State and Federal Regulations. This application does not create liability on the part of the County or any officer or employee thereof for any flood damage that results from reliance on this application or any administrative decision made lawfully thereunder. Applicant: Contractor: , , , �0 SO t-e--Fa SIGs ailing Addres : Mailing Address: . 0. Y_ 2 0 City, State, Zip City, State. Zip a ROSo1+ Phon : ( ) 402--0G 3o Phone: ( ) Email:Iq . 0102 M 0 rt/ eV--.V)A . ✓ Email: Parcel Number: j I Property Address: A. Description of Work(complete for all work): 1. Proposed Development Description: ❑ New building ❑ Improvement to existing building ❑ Manufactured home ❑ Filling ,K-Other fL�2D��1leCMQ�('� 2. Size and location of proposed develo nt(attach site plan): SSDt� fU12 ,2,m � v o a o6f 3. Is the proposed devefbpmentin a Special Flood Hazard Area(Zones A,AE,Al-A30,AH�or AO)? LA)Aj XYes ❑ No 4. Per the floodplain map, what is the zone and panel number of the area of the proposed development? Flood Zone Designation A Community Panel Number 5. Are other Federal, State or local permits obtained? ❑ Yes ❑ No 6. Is the proposed development in an identified floodway? VYes ❑ No 7. If yes to#6, is a "No Rise Certification"with supporting data attached? ❑ Yes ❑ No B. Complete for New Structures and Building Sites: r l 1. Base Flood Elevation at the site: feet NGVD 2. Required lowest floor elevation (including basement): feet NGVD 3. Elevation to which all attendant utilities, including all heating and electrical equipment, will be protected from flood damage: feet NGVD C. Complete for Alterations, Additions, or Improvements to Existing Structures: 1. What is the estimated market value of the existing structure? $ 2. What is the cost of the proposed construction? $ 3. If the cost of the proposed construction equals or exceeds 50 percent of the market value of the structure, then the substantial improvement provisions shall apply. D. Complete for Non-Residential Floodproofed Construction: 1. Type of floodproofing method: 2. The required floodproofing elevation is: feet NGVD 3. F000dproofing certification by a registered engineer is attached: ❑ Yes ❑ No E. Complete for Subdivisions and Planned Unit Developments: 1. Will the subdivision or other development contain 50 lots or 5 acres? ❑ Yes ❑ No 2. If yes, does the plat or proposal clearly identify base flood elevations? ❑ Yes ❑ No 3. Are the 100 Year Floodplain and Floodway delineated on the site plan? ❑ Yes ❑ No Applicants Signature: Date: Administrative 1. Permit APPROVED: DENIED statement attached 2. Elevation Certificate attached: ❑ Yes ❑ No 3. As-built lowest floor elevation: feet NGVD 4. Work inspected by: 5. Local Administrator Signature: Date: laze /Z CONDITIONS: 00to, TYVC+-V►-2, — V CWC—Zo5 ED MCCARTHY, P.E., P.S. 9957171 AVENUE SE Hydrology - Hydraulics - Engineering Renton, WA 98059 (425) 271-5734 December 14, 2020 R E CEIV Mr. Michael Hankinson State of Washington Parks and Recreation FEB 0 3 2021 P.O. Box 42650 615 Olympia,WA 98504 W. Adder Sfreet Re: Schafer State Park—Project Phase 1 Campground Relocation East Fork Satsop River—F000dplain Analysis Mr. Michael Hankinson: PLANNING This report describes efforts used to assess the hydraulic characteristics of a reach of the East Fork Satsop River that flows along Schafer State Park in southwest Mason County(Figure 1). The report describes the methods and results from applying the hydraulic model HEC-RAS in evaluating the floodplain on the project site(U.S. Army Corps of Engineers, 2002;U.S. Army Corps of Engineers, 2016). The proposed plan for Schafer State Park Project Phase 1 (J.A. Brennan Associates,December 2020) includes a Welcome center, new parking lots,pavement restoration and grading for relocated campsites.A portion of proposed site improvements are within the floodplain of the East Fork Satsop River. The hydraulic modeling presented in this report was used to prepare a floodplain map of the site and to evaluate zero-rise requirements for proposed site improvements. Zero-Rise Modeling Methodology Basin Characteristics The study reach is along the East Fork Satsop River,upstream from its confluence with Decker Creek(Figure 2). The study reach is mapped as a Zone A Special Flood Hazard Area(SFHA) on the Flood Insurance Rate Map (FIRM)(FEMA, June 20,2019). The tributary basin draining to the study reach has an area of 78 square miles (USGS,April 2020). Schafer State Park is an existing park with site improvements including roads,buildings and camp sites (Attachment A). Channel Geometry The hydraulic model HEC-RAS (Version 5.0.3)was used to evaluate the hydraulics of the river and its floodplain(Figure 2). The HEC-RAS model used in developing the Effective FIRM for the study reach was obtained from FEMA. FEMA used this model to develop the Zone A SFHA for the study reach shown on the effective FIRM (Attachment B). The channel and overbank geometry for the FEMA HEC-RAS model was based on LiDAR data(STARR, November 15, 2013; STARR,March 19,2014).Hydraulic structures such as the Schafer State Park bridge on the East Fork Satsop River,were not modeled in the HEC-RAS model obtained from FEMA. Mr. Michael Hankinson Page 2 December 14,2020 For the Schafer Park project,the cross sections for the portion of HEC-RAS model passing through the area of proposed improvements were updated with field topography from the project's base map (Berglund, Schmidt and Associates, January 2020). The Schafer State Park bridge, located at the downstream end of the proposed site improvements,was included in the updated HEC-RAS model. The geometry of the bridge was based on engineering plans for the structure(Sargent Engineers, Inc. and Mason County Department of Public Works. June 15, 1992). Post-project conditions for the park were based on the site plan for the project(J.A. Brennan Associates,December 2020;Attachment Q. The proposed Welcome Center's grading and structure is included the in HEC-RAS model at cross section RS 8849. Light thinning of vegetation surrounding the Welcome Center is likely to occur during construction,therefore offsetting some of the effects of proposed fill. Other scattered areas of shallow fill are proposed on the site at locations upstream from the Welcome Center. This includes the placement of fill at cross sections RS 9887 and RS 9671.9. The cross-sectional fill area at these cross sections was measured in CAD and represented in HEC-RAS as a channel blockage with an equivalent fill area. These areas of fill at sections RS 8849 and RS 9671.9 will not have material effect on flood conveyance because they are in an area of ineffective flow. Flood Flow Rates FEMA's HEC-RAS model included base flow rates developed using a gauge analysis of flows for the East Fork Satsop River. Flows for tributary Decker Creek in FEMA's model were based on USGS regression equations (November 15, 2013). Flows for the 2-year, 5-year, 10-year, 50- year, 200-year and 500-year storms were added to the HEC-RAS model for the project based on a combination of USGS gauge data and Streamstats USGS regression equations (USGS,April 10,2020) (Attachment D). Hydraulic Modeling Results Predicted Flow Rates The predicted flood flow rates in the East Fork Satsop River for the study reach are as follows: Return Period Flood Flow Rate (Years) CFS) 10 5,995 50 7,725 100 7,954 Mr. Michael Hankinson Page 3 December 14,2020 The 100-year flood flow rate was used to map the floodplain on the site and to conduct a zero- rise analysis for proposed site improvements. Floodplain maps for the site, for both existing and post-project conditions, are provided in Attachment E. Zero-Rise Analysis For the 100-year flood flow,water surface elevations under existing conditions were predicted to range from 125.01 feet NAVD 88 at the downstream end of the project site(RS 8047)to 130.40 feet NAVD 88 feet at the upstream end(RS 10084) (Attachment E). A comparison of HEC- RAS modeling results between the Post-project Model and the Existing Conditions Model indicates that zero-rise criteria are met(Attachment F).No increase in the predicted BFEs or energy grade elevations is predicted as a result of the project. Recommendations The BFE at the Welcome Center(RS 8849)is predicted to be 125.67 feet NAVD 88. A finished floor elevation of 127.67 feet NAVD is recommended to provide 2 feet of freeboard above the flood elevation. War t �O 576 12-24-2S,SOIST NALR �ti Edward McCarthy,Ph.D. P.E. Hydrologist References Berglund, Schmidt and Associates,January, 2020. Topographic Survey of Schafer State Park. Hoquiam,Wash. J.A. Brennan Associates, December 2020. Schafer State Park—Campground Relocation Project Phase 1—Site Plan. Seattle. Federal Emergency Management Agency, June 20, 2019.Flood Insurance Rate Map, Mason County, Washington and Incorporated Areas. Panel 700 of 775. Map Number 530345C0700E. Sargent Engineers, Inc. and Mason County Department of Public Works,June 15, 1992. Schafer State Park Bridge—Bridge Replacement. Sheet 1 of 9—Layout. Olympia. STARR, March 19, 2014.Hydraulic Analyses Report—Mason County, Washington—Mason County Study. Contract No.HSFEHQ-09-D-0370, Task Order No. HSFE10-12-J-0120. Laurel, MR. STARR,November 15, 2013.Hydrologic Analyses Report—Mason County, Washington— Unincorporated Areas—CID 53015 -Mason County Study. Contract No. HSFEHQ-09-D- 0370, Task Order No. HSFE10-124-0120. Laurel,MR. U.S. Army Corps of Engineers, Hydrologic Engineering Center. 2002.HEC-RAS, River Analysis System User's Manual,Version 3.1. Davis, California. U.S. Army Corps of Engineers, September 2016. HECRAS 5.0.3 Computer Software. Hydrologic Engineering Center,Davis, CA. USGS, April 10, 2020. Streamstats Reportfor Upper Reach East Fork Satsop River. Web-based application. 3 rs�r 7 � n �t Figure • • Brennan Associates) CAD NO. 1 e � ♦ � tlGLGHED 11/1Bl]Ot0 EM 1T/IB/1D30 PHASE PROJECT AREA WASHINGTON x, STATE 9D7O,2 PARKS AND ' R" ° RECREATION ^ ♦ COMMISSION , 1 �N `' ! f ` Kist" *} SCRAPER STATE PARK Al CAMPGROUND RELOCATION LEGEND PROJECT PHASE i FEMA HEC RAS CROSS-SECTION ---� ADDED HEC-RAS CROSS-SECTION FIGURE 2. STUDY REACH SCALE NTS PARKS FILE# Attachments Attachment A. Photos of Site and River Attachment B. Effective FIRM Attachment C. Site Plan Attachment D. Streamstats Data Attachment E. Site Floodplain Maps Attachment F. East Fork Satsop River-HEC-RAS Input/Output Attachment A. Photos of Site and River Appendix A. Photos of the Project Site ♦ Photo Number 1 ♦ Photo Number 2 Date of Photo: 11-26-2018 Date of Photo: 11-26-2018 Location: Schafer State Park,west camp loop looking Location: Schafer State Park shelter, east west arkin lot, looking east Description: The campsites and facilities west of W Description: The day use pavilion is located on Schafer Park Road are the areas most slightly higher ground. The day use negatively affected by flooding(Taken by park is under water(Taken by WA WA State Parks staff) State Parks staff) _c, Appendix A. Photos of the Project Site ♦ Photo Number 3 ♦ Photo Number 4 Date of Photo: 11-26-2018 Date of Photo: 11-26-2018 Location: Schafer State Park,west RV loop, Location: Schafer State Park, left bank of looking west the E Fork Satsop, looking downstream(west) across W Schafer Park Rd This photo shows horse hitching Description: This drive is part of the existing Description: locations underwater(Taken by WA river access and day use area State Parks staff) (Taken by WA State Parks staff) ,Y I � n Appendix A. Photos of the Project Site and River ♦ Photo Number 5 ♦ Photo Number 6 Date of Photo: 10-26-2018 Date of Photo: August 2013 Location: East Fork Satsop River looking Location: Schafer State Park bridge looking downstream towards Schafer State Park upstream. bridge. Description: The reach depicted in the photo is adjacent Description: Schafer State Park bridge crosses the East to the proposed site improvements. (Taken Fork Satsop River at the downstream by LJM) extent of proposed site improvements. (Google Maps Street View) i f .rw - 7 ♦ r•0 EXISTING COUNTY ROAD ONE-WAY ROAD ATTACHMENT A '�� `�F�■�■� '� PROPOSED HISTORIC ' AM—per TWO-WAY ROAD MONUMENT PLAZA ` - ^ ,, _``` ■■ Photo Point TRAILS FER ' -'-�"' r�+ � ENHANCEDTRAIL S�HA Rp NETW R �I PEDESTRIAN BRIDGE w RIVERBANK ® CAMPSITE WELCOME CENTER _ - LOG AND ROOT WAD - DAY USE AREA AND BUILDING - GATHERING SPACE _ DAY USE AREA WITH RIVER RESTORE PARK OFFICE -`��., y —— MEADOW AND BEACH - ,,...,�,,,, RELIC CHANNEL TO PICNIC SHELTER + 'A e — ■ r � _ EXISTING KITCF{EtJ ------ SHORELINE BUFFER DISCOVERY —"` +T-� � .�� \� ''NEUTERS WETLAND BUFFER LANDSCAPE ------------ 100-YEAR FLOODPLAIN ■ ) 1/' - —�' _.r uC-, �- RDWALK SAVE 26 EXISTING 1w �••�••�• PROPERTY BOUNDARY �.'. CAMPSITES .� ✓'o — �`,, � �� ,. ,T-- — EXISTING BACO ATION K CHANNE HABITAT EgsTFO _ .. - ■ R Syr jq ■ i� w '�` r` i ! '�� •,� � '}„'\I%C�'`. SHOP, Al RENOVATED CAMP LOOP PROPOSED COMFORT STATION I fi4 — EXISTING RESTROOM WEL PROPOSED PLAY AREA UNPLUMBED CABIN,TYP. ��`�'��'■.�� , �'' !✓ q!I �� EXISTING CAMPSITES 41 CLOCKWISE ONE-WAY DAY USE AREA WITH HAND r- ■ LOOP ROAD EXISTING CAMPSITES CARRY BOAT LAUNCH& EXISTING GROUP TO BE SAVED 26 ACCESSIBLE RIVER ACCESS CAMP WITH PICNIC NEW GROUP ` NEW CAMPSITES 15 NEW GROUP CAMP SHELTER AND CXT CAMP V TOILETS EXISTING DUMP �� REALIGNED TOTAL SITES 41 NEW COMFORT STATION Q °t:_--- ENTRY _._ NEW CABINS 9 STATION �h s-[ya—ems,- ,ar Photo Locations Washington State Parks and Recreation Commission M-.0 5i1/2019 I.a.►r.rnan._L.[..,PE2 te,h dCmr w h j.a.brennan O,Nm con[uaing Gra,R aalw.Ar[nwns me wateRned comwm. La=Assocutes,Berglund Schmidt&Associate;and Stantec a.L L t Attachment B. Effective FIRM . nr _ F,amnFr .,S��Fr ex�aoF. I ♦ , y i �y � r it eeaaoa Fr ��= b g�Y�D ssseeo rr /' t 1 Sn ebaxDFr •ta�N u5ooaiT •sYM YeeaR f ♦ ♦ f ♦ ♦ _.1s4 •fa•'ws •IPE•M OOOeeR ♦ ♦ f ♦ ♦ ♦ YM xIFmM aEYiR ♦ ♦ ♦ ♦ ♦ ♦ ViE VC'E u�^E win¢ - w`E M°r! ♦2� n xz xr "'"� Yrt 5o•'c 7x�e E FLOOD HAZARD INFORMATION NOTES TO USERS SCALE E.m.�.rrw....��.......•..�,..®.•.+rrr r.. ,�x,,,F,,,,,,,,,,,,,,,swuw.oxNs �E NATIONAL ROOD INSURANCE PROGRAM EEERSEMATION EIDMEDON EIS ANDSUIDF)IMN ,•,q+�� ill BUD INSCR,1111 RIT[M.1P TiE INFORMATION DEPICTED ONTRIS MAP AND SDPPORrING ^rwissi�w�i..•M•fin+Erirw�r,��rTv�ran• DOCIIMENTAi10N ME ALSO AVAIIABIE IN DIGITAL FORMATAT E~`a�.ErPbrw •r aw•r x.♦w� HTTP: MSC.FEMA.GOV bA MASONS.WASNINGTON,y;, // ��v,,..•�"iau"+r E..e�:...d.sw e..w.�:`.nrwr 141cR•2.000Mt LMA00 � O NEW wnnmeese Fwod EL.uF.Ierq wnre Pml w � wm700a775 wu BR VDepM%:,,::AF.AV.Au.r_Ap rwVr�q+E�r.r.v.rr i.,m ry,wbrr prw•. D 500 1— 2,000 U MOYIDAEFAS �Regulamry Fleodnwy T rxm n..v •, wa...M.r,yE�.�,Fnwrr�. NOW O.z%Mnual cnanx no.a NMaN.AredF .,,, ':. ^� '�"�'�"•'^�"r:•'r"r�'a W PANEL LOCATOR MI%annual tAame Rood wlM awdg! C CC.ILIIlIE1Y Nm. PMEL SUFM deem lag Dun me root.,Wo drainage aedsm Mss mon one xGGare Mle.: 'O NPW�#Fmure conaromre 1%Amoai �s O V CM—Fl000.... r O Area 00—M Flood RisM due lP-oo LL See N—..... , NOSGIEEM'AreasDneminedmoe oamde be Q O R D.I%Mnual CRance Fbodgain MEM Areaol DndelermineEFloo— R Z GENERAL ------C.....CUMrt,b Smrm Sewer STRUCNRES ::•.:+,..^:••^^: Ievee.Dike.or Floodwll �E , o-E=Crou SecWns witA 1%Morel CAanu Winer Surha DaaGon(BFq a----Cbslal T.,- ---GaGal Y. tBaseline -P,ox'a Baseline VFAGMIMHIMBFP xrdme,aemc Feaw,e D3]1 aDr-Eau Flood El—oo Lo,(BFE) E3W500TOp OOOE E G ER `��"pink of Smq R4ARARFS ARiWkUm BeuWrT fE20,29 lUME 0,901 Attachment C. Site Plan CAD NO. PIAI(m0EPR0ECIC)DEMR+LDM11E IE ' S 1 I 1 1 NEW CAMPSITE,TYP.• WETIANC E13 WETLAND A 1 � RIVER EDGE WERANDF 111I i 111 I FRIDGE .1C/ _ _� •/ EXISTING RESnE00M 00 S \ 1 I 1 EXISTING DAY USE DRIVE WILL BE ADDRESSED IN FUTURE MUSE VAORK, 1 I ♦ L �y LIMIT OF CONSTRURION,TYP. _ G —�PO MTE ry 1 15 20 DRnwR 12 15 zo I I 1 1 L 1 ( C /✓ i=-1 eED tv�Rnl 1z 1 z 1z 15 20 I I / O l <- / NEWWALKA31KEAN S(P I I ./ /(`) ' / � /� o •O // ' �. // / ° y// / �MRNE SITES(P1-P2) °cmmm sn.+ WASHINGTON STATE PARKS AND la ROADEDGE RECREATION PROPERTY LINE COMMISSION STATION DUMP STATION / 11 of SCHAEER STATE PARK HEI-RAS CROSS SECTIONS.1. RELOCATE CAMPGROUND j '�I -,` •\ ' \ \ SITE PLAN 7� EXISTING WELL HOUSE PROPOSED RESERVOIR I ,% /- WELL SCALE FUTURE NEW DRIVES THROUGH PARK,TYP. 0 �• PHASE WORK r PARKS FILER Attachment D. Streamstats Data 4/10/2020 StreamStats StreamStats Report - E. Fork Satsop above Decker Creek Region ID: WA Workspace ID: WA20200410223614043000 Clicked Point (Latitude, Longitude): 47.09649, -123.47142 Time: 2020-04-10 15:36:31 -0700 m m ar•-� 289 rp SANDEPSON} 'ZEY .w ..,, . .. Aa Shelton �' 1 , j�.A ' ,. �K N /� C C. L , East Fork Satsop-from Schafer Park upstream of bridge Basin Characteristics Parameter Code Parameter Description Value Unit BSLDEM30M Mean basin slope computed from 30 m DEM 7.05 percent CANOPY_PCT Percentage of drainage area covered by canopy as 54.3 percent described in OK SIR 2009_5267 DRNAREA Area that drains to a point on a stream 77.94 square miles ELEV Mean Basin Elevation 452 feet https://streamstats.usgs.gov/ss/ 1/3 4/10/2020 StreannStats Parameter Code Parameter Description Value Unit ELEVMAX Maximum basin elevation 2890 feet MINBELEV Minimum basin elevation 109 feet NFSL30 North-Facing Slopes Greater Than 30 Percent 0.56 percent PRECIP Mean Annual Precipitation 97.9 inches PRECPRIS10 Basin average mean annual precipitation for 1981 to 2010 92.1 inches from PRISM RELIEF Maximum - minimum elevation 2780 feet SLOP30_30M Percent area with slopes greater than 30 percent from 30- 4.17 percent meter DEM. Peak-Flow Statistics Parameters[Peak Region 4 2016 51181 Parameter Min Max Code Parameter Name Value Units Limit Limit DRNAREA Drainage Area 77.94 square 0.18 2230 miles PRECPRIS10 Mean Annual Precip PRISM 1981 92.1 inches 11 .9 187 2010 Peak-Flow Statistics Flow Report[Peak Region 4 2016 51181 PII: Prediction Interval-Lower, Plu: Prediction Interval-Upper, SEp: Standard Error of Prediction, SE: Standard Error (other -- see report) Statistic Value Unit PII Plu SEp 2 Year Peak Flood 3820 ft^3/s 534 27300 52.5 5 Year Peak Flood 5670 ft^3/s 814 39500 50.6 10 Year Peak Flood 7120 ft^3/s 991 51100 50.5 25 Year Peak Flood 8880 ft^3/s 1140 69400 51 .7 50 Year Peak Flood 10300 ft^3/s 1220 86500 52.9 100 Year Peak Flood 11800 ft^3/s 1310 106000 54.2 200 Year Peak Flood 13000 ft^3/s 1350 126000 55.5 500 Year Peak Flood 15300 ft^3/s 1420 165000 58 https://streamstats.usgs.gov/ss/ 2/3 4/10/2020 StreamStats Peak-Flow Statistics Citations Mastin, M.C., Konrad, C.P., Veilleux, A.G., and Tecca, A.E.,2016, Magnitude, frequency, and trends of floods at gaged and ungaged sites in Washington, based on data through water year 2014 (ver 1.1, October 2016): U.S. Geological Survey Scientific Investigations Report 2016-5118, 70 p. (http://dx.doi.org/10.3133/sir20l65118) USGS Data Disclaimer:Unless otherwise stated,all data,metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected.Although these data and associated meta data have been reviewed for accuracy and completeness and approved for release by the U.S.Geological Survey(USGS),no warranty expressed or implied is made regarding the display or utility of the data for other purposes,nor on all computer systems, nor shall the act of distribution constitute any such warranty. USGS Software Disclaimer:This software has been approved for release by the U.S.Geological Survey(USGS).Although the software has been subjected to rigorous review,the USGS reserves the right to update the software as needed pursuant to further analysis and review. No warranty,expressed or implied,is made by the USGS or the U.S.Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty.Furthermore, the software is released on condition that neither the USGS nor the U.S.Government shall be held liable for any damages resulting from its authorized or unauthorized use. USGS Product Names Disclaimer:Any use of trade,firm,or product names is for descriptive purposes only and does not imply endorsement by the U.S.Government. Application Version:4.3.11 https://streamstats.usgs.gov/ss/ 3/3 4/10/2020 StreamStats StreamStats Report - Decker Creek Region ID: WA Workspace ID: WA20200410225615343000 Clicked Point (Latitude, Longitude): 47.09674, -123,47461 Time: 2020-04-10 15:56:33 -0700 f fwr- Air ti SKOX0 MIS 10 s R_Ss_ A710N �1 Q1.. 289 rp ^'' �ZLy SANDERSON+- �0 Sheltor - .. _- Decker Creek Basin Characteristics Parameter Code Parameter Description Value Unit DRNAREA Area that drains to a point on a stream 45.95 square miles PRECPRIS10 Basin average mean annual precipitation for 1981 to 2010 106 inches from PRISM BSLDEM30M Mean basin slope computed from 30 m DEM 10.7 percent CANOPY_PCT Percentage of drainage area covered by canopy as 51 .8 percent described in OK SIR 2009 5267 https://streamstats.usgs.gov/ss/ 1/3 4/10/2020 StreamStats Parameter Code Parameter Description Value Unit ELEV Mean Basin Elevation 573 feet ELEVMAX Maximum basin elevation 3030 feet MINBELEV Minimum basin elevation 111 feet NFSL30 North-Facing Slopes Greater Than 30 Percent 1.12 percent PRECIP Mean Annual Precipitation ill inches RELIEF Maximum - minimum elevation 2920 feet SLOP30_30M Percent area with slopes greater than 30 percent from 30- 12.8 percent meter DEM. Peak-Flow Statistics Parameters[Peak Region 4 2016 51181 Parameter Min Max Code Parameter Name Value Units Limit Limit DRNAREA Drainage Area 45.95 square 0.18 2230 miles PRECPRISI0 Mean Annual Precip PRISM 1981 106 inches 11 .9 187 2010 Peak-Flow Statistics Flow Report[Peak Region 42016 51181 PII: Prediction Interval-Lower, Plu: Prediction Interval-Upper, SEp: Standard Error of Prediction, SE: Standard Error (other -- see report) Statistic Value Unit PII Plu SEp 2 Year Peak Flood 2980 ft^3/s 315 28100 52.5 5 Year Peak Flood 4240 ft^3/s 461 39100 50.6 10 Year Peak Flood 5220 ft^3/s 546 49800 50.5 25 Year Peak Flood 6360 ft^3/s 602 67100 51 .7 50 Year Peak Flood 7260 ft^3/s 633 83400 52.9 100 Year Peak Flood 8240 ft^3/s 661 103000 54.2 200 Year Peak Flood 8970 ft^3/s 665 121000 55.5 500 Year Peak Flood 10400 ft^3/s 678 159000 58 Peak-Flow Statistics Citations https://streamstats.usgs.gov/ss/ 2/3 4/10/2020 StreamStats Mastin, M.C., Konrad, C.P., Veilleux, A.G., and Tecca, A.E.,2016, Magnitude, frequency, and trends of floods at gaged and ungaged sites in Washington, based on data through water year 2014 (ver 1.1, October 2016): U.S. Geological Survey Scientific Investigations Report 2016-5118, 70 p. (http://dx.doi.org/10.3133/sir20l65118) USGS Data Disclaimer: Unless otherwise stated,all data,metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected.Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S.Geological Survey(USGS),no warranty expressed or implied is made regarding the display or utility of the data for other purposes,nor on all computer systems, nor shall the act of distribution constitute any such warranty. USGS Software Disclaimer:This software has been approved for release by the U.S.Geological Survey(USGS).Although the software has been subjected to rigorous review,the USGS reserves the right to update the software as needed pursuant to further analysis and review. No warranty,expressed or implied,is made by the USGS or the U.S.Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty.Furthermore, the software is released on condition that neither the USGS nor the U.S.Government shall be held liable for any damages resulting from its authorized or unauthorized use. USGS Product Names Disclaimer:Any use of trade,firm,or product names is for descriptive purposes only and does not imply endorsement by the U.S.Government. Application Version:4.3.11 https://streamstats.usgs.gov/ss/ 3/3 Attachment E. Site Floodplain Maps CAD NO. s H T FoRkSATS�AR/�F g ZONE AE / a. a E / n r � aaaEo EM ,v,vmvo ZONE XIt r \\ \ i ZONE WASHINGTON STATE PARKS ` ZONE x i /// AND RECREATION COMMISSION �a Fr LEGEND PHASE I PROJECT AREA \ -- FEMA ZONEAI%FLOOD—_—_ SCRAPER MODELED I%FLOOD STATE PARK MEGRAS CROSSSEC710N CAMPGROUND RELOCATION o / NOTES PROJECT PHASE I VERTICAL DATUM:NAVD 1998 PHASE I AREA SURVEY PROVIDED JANUAW2020 BY / J� BERGLUND.SCHIMDT d ASSOC..INC.(360)532-7630. lOO-YEAR W FLOOD MAP: EXISTING W yg CONDITIONS 4� SCALE r ' PARKS FIIE9 � wFgg FORKSgTs .. r � W + T � A v ZONE AE / y r., m WELCOME CENTER PLACED ON FILL -C - Q n �� ag \\ BY // I � - -_ �' D�FC✓ID eN 12nVJON ZONE — — ZONE X / WASHINGTON r STATE PARKS ZONE O��//I AND �/ RECREATION LEGEND COMMISSION PHASE I PROJECT AREA T� >. —————— FEMAZONEAI%FLOOD SCHAFER MODELED I%FLOOD STATE PARK �•r� ❑ / HEGRAS CROSSSECTION o _ i CAMPGROUND r I RELOCATION NOTES PROJECT PHASE I VERTICAL DATUM:NAVD 198E \ n- PHASE I AREA SURVEY PROVIDED JANUARY 2020 BY BERGLUND,SCHIMDT B ASSOC..INC.(360)532-7630. I00-YEAR FLOOD MAP: qye /I s PROPOSED wu CONDITIONS \ � SCALE 60, --— - _ 0 120' ° PARKS FILE" Attachment F. East Fork Satsop River - HEC-RAS Input/Output HEC-RAS Model SchaferStPark_EF_Satsop.prj Filename HEC-RAS Plan ID Description Existing East Fork Satsop River under existing site conditions. Post-project East Fork Satsop River under post-project site conditions. Note: All elevations are referenced to NAVD 88 datum. The following are provided in this attachment: - HEC-RAS water surface profiles of East Fork Satsop River(both existing and post- project conditions for 100-year flow). - HEC-RAS cross sections of East Fork Satsop River showing 100-year water surfaces (both existing and post-project conditions). - HEC-RAS tabular output for the 100-year flow rate (existing conditions versus post- project) for all cross sections. Schafer State Park Floodplain Study Plan: 1) Existing 12/14/2020 2) Post-Project 12/14/2020 150 Legend j WS 100-Yr-Existing WS 100-Yr-Post-Project Ground -- -- - - -- 140 — —� - -- --- Welcome Center 130 76 i ---- ------- .__ w 120 —— — . i- 110 rn v (D w rn N -_ V C. i (D N N M N - 0O N 04 1 (D 00 O (DO00 CO i N. N CO M 0)j a) M 0 2000 4000 6000 8000 10000 Main Channel Distance(ft) 1 in Horiz. = 1300 ft 1 in Vert.=8 ft Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=14622.04 260 5 Legend- -` - -- -- -- - 240 - - -- ----- -- ----- -- ---. ... _.._ _ WS 100 Yr-Existing - - -- -- - - - - -- - - - - ---- 220 - - : - � - - WS 1 00 Yr Post Project - ' _. -... ------ --• - - ■ - - - --------------------- Ground __ Ground - -- -- --- - --- 0 200 --- --- ---. -- -- --- Bank Sta - - - - -- -- - - s 180 - ----- --- ---------- _.. _... 160 - --- 140 - -- 120 0 500 1000 1500 2000 2500 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=14126.17 11 .L 11 260 _-- - - - --:_ � _� Legend - 5 - -- b - 240 WS 100-Yr-Existing - --- - -- -- - -- --- - - = WS 100-Yr Post Project 220 — - - -- - --- -- Ground 0 200 Bank Sta 180 - + w 160 140 120 - 0 500 1000 1500 2000 2500 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=13044.84 400 11 0I --- --- -- 5 Legend 5 - --- -- ---- •-- - --- -.- ; WS 100-Yr-Existing 350 - - , --. ------ - -- - a - - - ---_. -' WS 100 Yr-Post-Project - ------ --_ ------ -----: _;.. - - - -- - --- 300 -- - d -- Groun - - . ---. - - ---- --- - . . - - _..- - - - _ - • _-. _... - Bank Sta 250 — - -- - m ---- --- - - - - w _..__ ------ - - - 200 --T T �- - --- __ _ ---- -----..- 150 ---- 100 0 500 1000 1500 2000 2500 3000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=12541.27 280 — ge 0 260 -- --' --=- - Le.nd 5 5 WS 100-Yr-Post-Project 240 — - -- - ---- - WS 100-Yr-Existing 220 Ground • � _ --- ----------+----------- - i -- ----- ------ - -- --- - ; -- - E- - - Bank Sta 200 — N ---------i-------------------------------------------'---------------------------------------------_------ ----------.-.-... w 180 160 140 — — -- t 120 - - - 0 500 1000 1500 2000 2500 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 IRS=11297.9 11 .11 200 0 —7-_ -___ Legend 5 - -- 190 5 - -- -- WS 100-Yr-Existing • 180 WS 100-Yr-Post-Project 170 _ Ground • Sta - -- - -� - -- ------ -- c - 160 Bank- m w 150 � 140 -- 130 120 0 200 460 600 800 1000 1200 1400 1600 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=10084.29 .1 _ .055 � .11 170 Legend --- -- - -- ---- - - ----- - . _ . - ---- - ,---- F , _ -- WS 100-Yr-Existing 160 - -- -- - - - • _ . __ _. _ - - - -- --- -- T -- - -P - T T WS 100 Yr Post-Project - Ground o - - - - - Bank Sta w 140 130 120 --�— - 0 200 400 600 800 1000 1200 1400 Station(ft) Schafer State Park F|oodp|ainStudy Plan: 1) Existng 12/18/2020 2) Pust-Pnoject 12/18/2028 ne~ouo7 Legend 150- 1*oArea of Fill- See Enlargement Ui 130 1 �—�---- ------� O 200 400 mm mm 1000 1200 1400 stauon(ft) Schafer State Park F|oodp|ain Study Plan: 1) Existing 12Y18/2020 2) Post-Project 12/18/2020 Ra~oer1.eou Legend 18O 180 Ground Z� 1m > --------- T Bank Sta m 150--- —See Enlargement 140- 130- 120 0 200 400 600 800 1000 1200 1400 1600 1800 Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2)Post-Project 12/18/2020 RS=9360 .09 .055 .11 180 _ — - Legend - --- -- --- -- 170 t ---_— WS 100.Yr-Existing - - - ---- -- - --._. 160 -... _ _ - - - WS 100 Yr Post Project -- - - -- - -::_ ., _ y :_ `- Ground - -- - - -- -- - - - - - - --- - - 150 ._ c _.. -- -- -'- - -- ..... ._;. ._.__ .....;-- .---. .i-- ---- -- ._ -. ;--- ----- Ineff o - ----._ _ m 140 - !::. - - Bank Sta - _. - w -,- - - - r-- - - - � - - ----------------------------------i--------------- 130 F _. 120 - . — — 110 - - 0 200 400 600 800 1000 1200 1400 1600 1800 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=9070.206 170 T— .09 055 11 - - - --- - -. -- - egen 160 WS 100-Yr-Existing ---- - -T-- - ------. - - _:.. WS 100-Yr-Post-Project - _. - 150 - Ground c _ -- i Ineff j= 140 — ---- =— -- - — -- • Bank Sta w 130 — 120 - 1 110 - 0 500 1000 1500 2000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=8972 ----,-- ---+-- - - ---- - _ _.... ------ -! Legend -- - - _.. --• ---- --.. -- - -- - ------- WS 100-Yr-Existing 160 ::: --- --- - -- --- + -- --- -- -- - --- ---- WS 100-Yr-Post-Project - -- -. - - L150 - 4 _ Ground nd --. ---- i ----- --- ;--- -- - . ---•- - - - - - ---- ------------ Ineff _ - 140 - - 1 Bank Sta -- - - - y j - -- - - --- 130 _ T i 120 - ..... 110 - - -- 0 S00 1000 1500 2000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2)Post-Project 12/18/2020 RS=8849.33* < .055 .11 170 —_ Legend 160 - — -- - __�_ �— — - -'Post-Project - _ _. _ ---- -- - WS 100- r _ ---- __-- WS 100 Yr-Existing 150 Ground c - Ineff 140 — — Welcome Center- Baneksta ---- --- -- See Enlargement w 130 -- I 120 - • 110 -T� 0 500 1000 1500 2000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=8604 < 11 055+ .11 170 - --- -- __ - Legend --- ---- - --- ------ ---- - ------ WS 100-Yr-Existing 160 -:.._ . . - ---- ----- - ------ --- -- - - - . _ ,--_ WS 100 Yr Post Project - ------ Ground - Ineff ------ 140 -T • - -- , - Bank Sta -- ---- __ ._. w --- -. 130 ---- 120 _._ __ i 110 - 0 500 1000 1500 2000 2500 3000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 IRS=8587 copied from 8559 11 .055- < 11 a 170 - —- - - ---- - 1, Legend WS 10 i 0-Yr-Existing t 160 -r - + WS 100-Yr-Post-Project 150 - _ (: - r+n 140- -- Glneffd Bank Sta w - -- 130 — - _.._ - -- ---- -- - , -- 120 - - - - - -------------------------------- ---- 110 - 0 500 1000 1500 2000 2500 3000 Station(ft) Schafer State Park FloodplainStudy Plan: 1) ExiuUng 12h8/2020 2) Pout-Pnoject 12Y18/2020 Ro~usse an vx Schafer Park RuBridge 160 150-- Ground Iteff 1 '^" 110+---`---- o noo 1000 1e00 u000 2n00 0000 mtauonV0 Schafer State Park F|oodp|ainStudy Plan: 1) Ex|mUng 12/18/2020 2\ Poat-Pnojeot 12/18/2020 na u*so BR vv.Schafer Park auBridge 1ru Legend 18O 150- CU Bank Sta �*0 LLJ 1aw 1 11 Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=8531 copied from 8559 .11- � .055- .11 170 Legend 160 -- - 1----- WS100-Yr-Existing - - Yr Post-Project -r --- - - 150 - I._ - - - - 00 Ground - j- - { - - --- . - - i - - - . -. - - ---- - Ineff 140 m -- --- Bank Sta w1 _.._ _ 130 - — - — - 120 i 110 � 0 500 1000 1500 2000 2500 3000 Station(ft) Schafer State Park Floodplain Study Plan: 1)Existing 12/18/2020 2) Post-Project 12/18/2020 RS=8512 11 '4059� .11 - f - - Legend t 160 - - ---- __. ��._ _ - ----- WS 100-Yr-Existing }}t WS 100-Yr-Post-Project ---- ■ 150 -- _ Ground Ineff 140 - - = - -- ----- - - • -- - Bank Sta w ---._ - 130MON ---j— ` 120 0 500 1000 1500 2000 2500 3000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 IRS=8047.474 170 �-- - 0 --- -- Legend---- ---- -- - 5- - - - - --- ---- _ --- _ . ; 5 160 ' WS 100-Yr-Existing -- -- -- - ---- -- - - -- - -- __ __ .__ _ _. WS 1 Yr Post Project -- -------. ... ---- - --- ... _.-- .- 150 - Ground - -- - -- - - -- -- --- -- �i ` - - - ; Bank Sta 140 @ -- - __ ----------- -------> - -- - -- - --- - -- - --- -- uJ __. .. .____ _______ ___. _____ _ ___ _ 1 -( 120 110 - 500 1000 1500 2000 2500 3000 3500 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=7822.369 190 -- — - 5 Legend 180 --- ? - -- -- -- - WS 100 Yr Existing ---- 170 - - � r -- � -� - - ' ---- -- — -- WS 100-Yr Post-Project -- -- ------ -- 160 Ground �. - - ° 150 Bank Sta .. ------- ---- ---- --- ------- a� ( w 120 110 500 1000 1500 2000 2500 3000 3500 4000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=6391.458 .07 �- - _ .. 200 S, Legend _ ._- -Yr-Existing f S - WS 100 -- f 180 -- ---C --- — — f -- • 1 _ - t WS 100-Yr-Post-Project + --- Ground — _- c 160 _ - --- Bank Sta w 140 120 �— -- — i i I r 100 0 1000 2000 3000 4000 5000 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=9887 .095 �—.055 11 160 - - end WS 100-Yr-Existing ->- WS 100-Yr-Post-Project Ground • Ineff • Bank Sta c 140 — --� 100-Year Water 130 -- Surface Ineffective Equivalent Area of Flow Area Fill 120 0 200 400 600 800 1000 1200 1400 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=9671.908 .09 "� .055 �" 11 -- d ' ( en - - -; - ( - ' WS 100 Yr-Existing WS 100-Yr-Post-Project 190 Ground Ineff • i ! Bank Sta 180 170 C 160 — 78 W 150 Equivalent Area of Fill 140 Ineffective Flow Area 130 -- 100-Year Water Surface 120 0 200 460 600 860 1000 1200 1400 1600 1800 Station(ft) Schafer State Park Floodplain Study Plan: 1) Existing 12/18/2020 2) Post-Project 12/18/2020 RS=8849.33* 11 "�" 055 .11 170 Legend WS 100-Yr-Post-Project WS 100-Yr-Existing Ground 160 • Ineff Bank Sta c 140 w 130 Welcome Center Fill 100-Year Water Surface Ineffective 120 Flow Area 110 0 500 1000 1500 2000 Station(ft) HEC-RAS River:East Fork Satsop Reach:2 Profile:100-Yr Reach River Ste Profile Plan Q Total Min Ch El W.S.Elev Crit W.S. E.G.Elev E.G.Slope Vel Chnl Flow Area Top Width Froude#Chl (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) 2 14622.04 100-Yr Existing 7885.00 141.22 145.64 145.69 0.002268 3.32 4585.58 1107.47 0.29 2 14622.04 100-Yr Post-Project 7885.00 141.22 145.64 145.69 0.002268 3.32 4585.57 1107.47 0.29 2 14126.17 100-Yr Existing 7885.00 139.751 144.58 144.62 0.002085 3.52 5506.90 1750.66 0.28 2 14126.17 100-Yr Post-Project 7885.00 139.75 144.58 144.62 0.002085 3.52 5506.84 1750.66 0.28 2 13044.84 100-Yr Existing 7885.00 136.73 140.98 141.06 0.005949 5.27 4012.49 1661.22 0.46 2 13044.84 100-Yr Post-Project 7885.00 136.73 140.98 141.06 0.005949 5.27 4012.47 1661.22 0.46 2 12541.27 100-Yr Existing 7885.00 134.89 137.31 137.39 0.009158 4.42 3542.68 1638.05 0.52 2 12541.27 100-Yr Post-Project 7885.00 134.89 137.31 137.39 0.009157 4.42 3542.701 1638.05 0.52 2 11297.9 100-Yr Existing 7954.00 124.69 133.51 133.59 0.001521 4.41 4887.49 1051.09 0.27 2 11297.9 100-Yr Post-Project 7954.00 124.69 133.51 133.59 0.001521 4.41 4887.44 1051.09 0.27 2 10084.29 100-Yr Existing 7954.00 121.00 130.40 130.98 0.003103 6.51 1593.76 363.17 0.38 2 10084.29 100-Yr Post-Project 7954.00 121.00 130.40 130.98 0.003103 6.51 1593.69 363.15 0.38 2 9887 100-Yr Existing 7954.00 120.98 129.64 130.29 0.003770 6.93 1559.07 469.16 0.42 2 9887 100-Yr Post-Project 7954.00 120.98 129.64 130.291 0.003770 6.94 1558.98 469.15 0.42 2 9671.908 100-Yr Existing 7954.00 120.00 128.83 129.46 0.004022 6.78 1499.42 560.95 0.42 2 9671.908 100-Yr Post-Project 7954.00 120.00 128.83 129.46 0.004023 6.78 1499.27 560.89 0.42 2 9360 100-Yr Existing 7954.00 119.97 127.39 128.02 0.005415 7.47 1699.78 614.50 0.49 2 9360 100-Yr Post-Project 7954.00 119.97 127.39 128.011 0.005421 7.47 1699.06 614.35 0.49 2 9070.206 100-Yr Existing 7954.00 118.00 126.49 126.80 0.002888 5.69 2512.27 800.58 0.36 2 9070.206 100-Yr Post-Project 7954.00 118.00 126.48 126.80 0.002896 5.70 2509.68 800.15 0.36 2 8972 100-Yr Existing 7954.00 116.98 125.91 126.13 0.001897 5.01 3526.75 1089.81 0.30 2 8972 100-Yr Post-Project 7954.00 116.98 125.91 126.12 0.001905 5.01 3520.53 1088.53 0.30 2 8849.33" 100-Yr Existing 7954.00 116.65 125.67 Welcome 125.99 0.002741 5.74 3341.03 1358.87 0.35 2 8849.33" 100-Yr Post-Project 7954.00 116.65 125.67 Center 125.99 0.002691 5.69 3210.34 1299.34 0.35 2 8604 100-Yr Existing 7954.00 116.00 125.47 125.71 0.002084 4.86 3833.78 1490.26 0.30 2 8604 1 100-Yr Post-Project 7954.00 116.001 125.471 125.71 0.0020841 4.86 3833.78 1490.26 0.30 HEC-RAS River:East Fork Satsop Reach:2 Profile:100-Yr(Continued) Reach River Sta Profile Plan Q Total Min Ch El W.S.Elev Crit W.S. E.G.Elev E.G.Slope Vel Chnl Flow Area Top Width Froude#Chi (cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) 2 8587 100-Yr Existing 7954.00 116.00 125.47 122.98 125.66 0.002056 4.49 3800.72 1323.82 0.30 2 8587 100-Yr Post-Project 7954.00 116.00 125.47 122.98 125.66 0.002056 4.49 3800.72 1323.82 0.30 2 8559 Bridge 2 8531 100-Yr Existing 7954.00 116.00 125.30 125.52 0.002339 4.72 3593.10 1291.88 0.31 2 8531 100-Yr Post-Project 7954.001 116.00 125.301 125.52 0.002339 4.72 3593.10 1291.88 0.31 2 8512 100-Yr Existing 7954.00 116.00 125.26 125.46 0.001875 4.84 4189.41 1512.20 0.29 2 8512 100-Yr Post-Project 7954.00 116.00 125.26 125.46 0.001875 4.84 4189.41 1512.20 0.29 2 8047.474 100-Yr Existing 7954.00 115.00 125.01 125.041 0.000407 2.47 8590.85 1934.49 0.14 2 8047.474 100-Yr Post-Project 7954.00 115.00 125.01 125.04 0.000407 2.47 8590.85 1934.49 0.14 2 7822.369 100-Yr Existing 7954.00 115.00 124.80 124.90 0.000949 3.73 14432.93 2377.63 0.21 2 7822.369 100-Yr Post-Project 7954.00 115.00 124.80 124.90 0.000949 3.73 14432.93 2377.63 0.21 2 6391.458 100-Yr Existing 8146.001 108.87 124.82 124.82 0.000012 0.59 29021.95 3555.31 0.03 2 16391.458 100-Yr Post-Project 8146.001 108.871 124.82 1 124.82 0.000012 0.59 29021.95 3555.31 0.03