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Home My WebLink AboutFEMA LOMRCase No.: Page 1 of 5 Effective Date: May 11, 2021 Issue Date: December 28, 2020 LOMR-APP 20-10-1157P Washington, D.C. 20472 Federal Emergency Management Agency LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION COMMUNITY APPROXIMATE LATITUDE & LONGITUDE: 47.740, -122.877 SOURCE: Precision Mapping Streets DATUM: NAD 83 Jefferson County Washington (Unincorporated Areas) COMMUNITY NO.: 530069 BASIS OF REQUEST IDENTIFIER NO PROJECT FLOODWAY HYDRAULIC ANALYSIS HYDROLOGIC ANALYSIS UPDATED TOPOGRAPHIC DATA FEMA-Initiated LOMR Jefferson County, WA ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES DATE: June 7, 2019 NO.: 53031C1285C TYPE: FIRM* DATE OF EFFECTIVE FLOOD INSURANCE STUDY: June 7, 2019 PROFILES: 13P, 13P(A) (NEW), 13P(B) (NEW) FLOODWAY DATA TABLE: 24 SUMMARY OF DISCHARGES TABLE: 10 Enclosures reflect changes to flooding sources affected by this revision. * FIRM - Flood Insurance Rate Map FLOODING SOURCE(S) & REVISED REACH(ES) See Page 2 for Additional Flooding Sources Marple Creek - From the confluence with Jackson Cove to approximately 1,900 feet upstream of U.S. Highway 101 SUMMARY OF REVISIONS Revised Flooding Effective Flooding Flooding Source Increases Decreases Marple Creek Floodway Zone AE Zone X (unshaded) BFEs* Floodway Zone AE Zone X (shaded) BFEs YES YES YES YES YES YES NONE YES * BFEs - Base (1-percent-annual-chance) Flood Elevations DETERMINATION This document provides the determination from the Department of Homeland Security's Federal Emergency Management Agency (FEMA) regarding a request for a Letter of Map Revision (LOMR) for the area described above. Using the information submitted, we have determined that a revision to the flood hazards depicted in the Flood Insurance Study (FIS) report and/or National Flood Insurance Program (NFIP) map is warranted. This document revises the effective NFIP map, as indicated in the attached documentation. Please use the enclosed annotated map panels revised by this LOMR for floodplain management purposes and for all flood insurance policies and renewals in your community. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Mapping and Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. 20-10-1157P 102-I-A-C Patrick “Rick” F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Case No.: Page 2 of 5 Effective Date: May 11, 2021 Issue Date: December 28, 2020 LOMR-APP 20-10-1157P Washington, D.C. 20472 Federal Emergency Management Agency LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) OTHER FLOODING SOURCES AFFECTED BY THIS REVISION FLOODING SOURCE(S) & REVISED REACH(ES) Marple Creek Split - From the confluence with Jackson Cove to the divergence from Marple Creek SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases Marple Creek Split Zone AE Zone AE BFEs Zone AE Zone X (shaded) BFEs YES NONE YES YES YES YES This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Mapping and Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. 20-10-1157P 102-I-A-C Patrick “Rick” F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Case No.: Page 3 of 5 Effective Date: May 11, 2021 Issue Date: December 28, 2020 LOMR-APP 20-10-1157P Washington, D.C. 20472 Federal Emergency Management Agency LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) COMMUNITY INFORMATION APPLICABLE NFIP REGULATIONS/COMMUNITY OBLIGATION We have made this determination pursuant to Section 206 of the Flood Disaster Protection Act of 1973 (P.L. 93-234) and in accordance with the National Flood Insurance Act of 1968, as amended (Title XIII of the Housing and Urban Development Act of 1968, P.L. 90-448), 42 U.S.C. 4001-4128, and 44 CFR Part 65. Pursuant to Section 1361 of the National Flood Insurance Act of 1968, as amended, communities participating in the NFIP are required to adopt and enforce floodplain management regulations that meet or exceed NFIP criteria. These criteria, including adoption of the FIS report and FIRM, and the modifications made by this LOMR, are the minimum requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirements to which the regulations apply. We provide the floodway designation to your community as a tool to regulate floodplain development. Therefore, the floodway revision we have described in this letter, while acceptable to us, must also be acceptable to your community and adopted by appropriate community action, as specified in Paragraph 60.3(d) of the NFIP regulations. COMMUNITY REMINDERS We based this determination on the 1-percent-annual-chance discharges computed in the submitted hydrologic model. Future development of projects upstream could cause increased discharges, which could cause increased flood hazards. A comprehensive restudy of your community’s flood hazards would consider the cumulative effects of development on discharges and could, therefore, indicate that greater flood hazards exist in this area. Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or State/Commonwealth law have been obtained. State/Commonwealth or community officials, based on knowledge of local conditions and in the interest of safety, may set higher standards for construction or may limit development in floodplain areas. If your State/Commonwealth or community has adopted more restrictive or comprehensive floodplain management criteria, those criteria take precedence over the minimum NFIP requirements. We will not print and distribute this LOMR to primary users, such as local insurance agents or mortgage lenders; instead, the community will serve as a repository for the new data. We encourage you to disseminate the information in this LOMR by preparing a news release for publication in your community's newspaper that describes the revision and explains how your community will provide the data and help interpret the NFIP maps. In that way, interested persons, such as property owners, insurance agents, and mortgage lenders, can benefit from the information. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Mapping and Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. 20-10-1157P 102-I-A-C Patrick “Rick” F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Case No.: Page 4 of 5 Effective Date: May 11, 2021 Issue Date: December 28, 2020 LOMR-APP 20-10-1157P Washington, D.C. 20472 Federal Emergency Management Agency LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) We have designated a Consultation Coordination Officer (CCO) to assist your community. The CCO will be the primary liaison between your community and FEMA. For information regarding your CCO, please contact: Ms. Kristen Meyers Director, Mitigation Division Federal Emergency Management Agency, Region X Federal Regional Center 130 228th Street, Southwest Bothell, WA 98021-8627 (425) 487-4543 STATUS OF THE COMMUNITY NFIP MAPS We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this LOMR at this time. When changes to the previously cited FIRM panel(s) and FIS report warrant physical revision and republication in the future, we will incorporate the modifications made by this LOMR at that time. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Mapping and Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. 20-10-1157P 102-I-A-C Patrick “Rick” F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Case No.: Page 5 of 5 Effective Date: May 11, 2021 Issue Date: December 28, 2020 LOMR-APP 20-10-1157P Washington, D.C. 20472 Federal Emergency Management Agency LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION A notice of changes will be published in the Federal Register. This information also will be published in your local newspaper on or about the dates listed below, and through FEMA’s Flood Hazard Mapping website at https://www.floodmaps.fema.gov/fhm/bfe_status/bfe_main.asp LOCAL NEWSPAPER Name: Peninsula Daily News Dates: January 4, 2021 and January 11, 2021 Within 90 days of the second publication in the local newspaper, any interested party may request that we reconsider this determination. Any request for reconsideration must be based on scientific or technical data. Therefore, this letter will be effective only after the 90-day appeal period has elapsed and we have resolved any appeals that we receive during this appeal period. Until this LOMR is effective, the revised flood hazard determination presented in this LOMR may be changed. This determination is based on the flood data presently available. The enclosed documents provide additional information regarding this determination. If you have any questions about this document, please contact the FEMA Mapping and Insurance eXchange toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 3601 Eisenhower Avenue, Suite 500, Alexandria, VA 22304-6426. Additional Information about the NFIP is available on our website at https://www.fema.gov/flood-insurance. 20-10-1157P 102-I-A-C Patrick “Rick” F. Sacbibit, P.E., Branch Chief Engineering Services Branch Federal Insurance and Mitigation Administration Table 10: Summary of Discharges Peak Discharge (cfs) Flooding Source Location Drainage Area (square miles) 10% Annual Chance 4% Annual Chance 2% Annual Chance 1% Annual Chance Existing 1% Annual Chance Future 0.2% Annual Chance Big Quilcene River At Quilcene Bay 69.1 3,580 * 5,200 5,900 * 7,800 Big Quilcene River At confluence with Penny Creek 58.9 3,130 * 4,540 5,140 * 6,780 Chimacum Creek At Puget Sound 38.0 650 * 920 1,020 * 1,320 Chimacum Creek At confluence with East Fork Chimacum Creek 24.2 450 * 620 690 * 870 Chimacum Creek Near Chimacum 14.0 310 * 430 480 * 600 Dosewallips River Downstream of Brinnon 114.5 10,010 * 14,520 16,600 * 21,590 Dosewallips River Upstream of Brinnon 93.4 8,200 * 11,900 13,600 * 17,680 Duckabush River Near Brinnon 66.5 6,760 * 8,870 9,770 * 11,900 Little Quilcene River At Quilcene Bay 36.0 1,370 * 1,960 2,210 * 2,880 Little Quilcene River At confluence with Leland Creek 24.6 990 * 1,410 1,590 * 2,060 Marple Creek At Jackson Cove 2.7 210 * 300 340 * 440 Port Townsend Creek At Discovery Bay 5.5 95 * 130 145 * 175 *Not calculated for this FIS project 33 FLOODING SOURCE FLOODWAY 1-PERCENT-ANNUAL-CHANCE FLOOD WATER SURFACE ELEVATION (NAVD88) CROSS SECTION DISTANCE1 WIDTH (FEET) SECTION AREA (SQUARE FEET) MEAN VELOCITY (FEET PER SECOND) REGULATORY (FEET) WITHOUT FLOODWAY (FEET) WITH FLOODWAY (FEET) INCREASE (FEET) MARPLE CREEK A 198 27 66 5.2 13.6 13.6 14.0 0.4 B 447 29 112 3.1 17.7 17.7 18.3 0.6 C 808 21 55 6.1 23.1 23.1 23.2 0.1 D 1,094 52 238 1.4 34.5 34.5 34.5 0.0 E 1,718 32 51 6.7 45.0 45.0 45.0 0.0 F 2,138 18 43 7.9 55.3 55.3 55.3 0.0 G 2,894 11 18 6.8 86.5 86.5 86.5 0.0 1Feet above confluence with Jackson Cove TABLE 24 FEDERAL EMERGENCY MANAGEMENT AGENCY JEFFERSON COUNTY, WA AND INCORPORATED AREAS FLOODWAY DATA MARPLE CREEK 95 -10 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 0 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 2,600ELEVATION IN FEET (NAVD 88)STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH JACKSON COVE FEDERAL EMERGENCY MANAGEMENT AGENCYJEFFERSON COUNTY, WAAND INCORPORATED AREASFLOOD PROFILESMARPLE CREEK13PBEE MILL ROADUS HIGHWAY 1010 A B C D E F * DATA NOT AVAILABLE LEGEND 0.2% ANNUAL CHANCE FLOOD 2% ANNUAL CHANCE FLOOD 4% ANNUAL CHANCE FLOOD* 10% ANNUAL CHANCE FLOOD STREAM BED CROSS SECTION LOCATION 1% ANNUAL CHANCE FLOOD "1%+" ANNUAL CHANCE FLOOD* COASTAL FLOOD EFFECTS FROM JACKSON COVE SEE FLOOD INSURANCE RATE MAP FOR BASE FLOOD ELEVATIONS AND COASTAL TRANSECT TABLE FOR STILLWATER ELEVATIONS REVISED REACH 40 50 60 60 70 70 80 80 90 90 100 100 110 110 120 120 130 130 2,400 2,600 2,800 3,000 3,200 3,400 3,600 3,800 4,000 4,200 4,400 4,600 4,800 5,000ELEVATION IN FEET (NAVD 88)STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH JACKSON COVE 13P(A)LIMIT OF DETAILED STUDYG REVISED REACH * DATA NOT AVAILABLE LEGEND 0.2% ANNUAL CHANCE FLOOD 2% ANNUAL CHANCE FLOOD 4% ANNUAL CHANCE FLOOD* 10% ANNUAL CHANCE FLOOD STREAM BED CROSS SECTION LOCATION 1% ANNUAL CHANCE FLOOD "1%+" ANNUAL CHANCE FLOOD*FEDERAL EMERGENCY MANAGEMENT AGENCYJEFFERSON COUNTY, WAAND INCORPORATED AREASFLOOD PROFILESMARPLE CREEK 5 10 10 15 15 20 20 25 25 30 30 35 35 40 40 45 45 0 100 200 300 400 500 600 700 800 900 1,000ELEVATION IN FEET (NAVD 88)STREAM DISTANCE IN FEET ABOVE CONFLUENCE WITH JACKSON COVE FEDERAL EMERGENCY MANAGEMENT AGENCYJEFFERSON COUNTY, WAAND INCORPORATED AREASFLOOD PROFILESMARPLE CREEK SPLIT13P(B)DIVERGENCE FROM MARPLE CREEK* DATA NOT AVAILABLE LEGEND 0.2% ANNUAL CHANCE FLOOD 2% ANNUAL CHANCE FLOOD 4% ANNUAL CHANCE FLOOD* 10% ANNUAL CHANCE FLOOD* STREAM BED CROSS SECTION LOCATION 1% ANNUAL CHANCE FLOOD "1%+" ANNUAL CHANCE FLOOD* REVISED REACH COASTAL FLOOD EFFECTS FROM JACKSON COVE SEE FLOOD INSURANCE RATE MAP FOR BASE FLOOD ELEVATIONS AND COASTAL TRANSECT TABLE FOR STILLWATER ELEVATIONS 280000 FT—— 275000 FT————509000mE ——508000mE ——47° 45' 00" 122° 52' 30" E E E E REVISEDAREA Marple Creek Split Spence r C r e e k Marp l e C r e e k 13 14 24 23 NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 26 NORTH, RANGE 2 WEST.£¤101 ZONE AE(EL 13) ZONE VE(EL 16)ZONE AE(EL 13) ZONE AE(EL 14)ZONE VE(EL 19),G,F,E,D,C,B,A(186(182 (184(185Jacks o n C r e e k Jackson CoveShoreline 17.7 86.5 55.345.034.5 23.1 17.7 13.615.7 ZONE AE(EL 16)ZONE VE(EL 17)ZONE AE(EL 14) Jackson Cove ZONE AE(EL 13) ZONE AE 1. ZONE AE 2. KEY TO STRUCTURES 1.0.2-PERCENT-ANNUAL-CHANCE FLOOD DISCHARGE CONTAINED IN STRUCTURE2.0.2-PERCENT-ANNUAL-CHANCE FLOOD DISCHARGE CONTAINED IN STRUCTURE Floodway too narrow to be shown. Refer to Floodway Data Table. Right Smart Cove ZONE AE ZONE VE(EL 16) Jefferson CountyUnincorporated Areas530069 Note: Terrain is too steep to map all cross sections. Refer to NFHL and profiles for Water Surface Elevations.58.874.6LIMIT OF STUDY NICHOLSMITH LNLEE WAYTOG RDShoreline Shoreline BEE MILL RD WAWA POINT RDWAWA POINT PL 1. KEY TO NUMBERED STREET1. COVE WAY HJELVICKS RDSCALE 0 1,000 2,000500Feet 1 inch = 1,000 feet 1:12,000 Map Projection:NAD 1983 UTM Zone 10N;Western Hemisphere; Vertical Datum: NAVD 88 0 300 600150 Meters NATIONAL FLOOD INSURANCE PROGRAMFLOOD INSURANCE RATE MAP JEFFERSON COUNTY, WASHINGTONand Incorporated Areas PANEL 1285 OF 1670 Panel Contains: COMMUNITY NUMBER PANEL SUFFIX MAP NUMBER EFFECTIVE DATEJUNE 7, 2019 53031C1285C VERSION NUMBER2.3.2.2 JEFFERSON COUNTY 530069 1285 C JOINS PANEL 0895 JOINS PANEL 1305