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Flood Control - LOMR - Boise River - 9/17/2010Page 1 of 4 issue Date: April 30, 2010 Effective Date: September 17, 2010 Case No.: 07-10-0642P LOMR-APP ,a�`pART,tjF ar Federal Emergency Management Agency Gy Washington, D.C. 20472 �`rr LETTER OF MAP REVISION DETERMINATION DOCUMENT COMMUNITY AND REVISION INFORMATION PROJECT DESCRIPTION BASIS OF REQUEST Ada County NO PROJECT FLOODWAY Idaho HYDRAULIC ANALYSIS (Unincorporated Areas) NEW TOPOGRAPHIC DATA COMMUNITY COMMUNITY NO.: 160001 IDENTIFIER Johnson LOMR APPROXIMATE LATITUDE & LONGITUDE: 43.682,-116A23 SOURCE: FIRM Panel DATUM: NAD 27 ANNOTATED MAPPING ENCLOSURES ANNOTATED STUDY ENCLOSURES TYPE: FIRM` NO.: 16001 C0141 H DATE: February 19, 2003 DATE OF EFFECTIVE FLOOD INSURANCE STUDY: October 2, 2003 TYPE: FIRM' NO.: 16001CO135H DATE: February 19, 2003 PROFILE(S): 03P, 13P, 112P FLOODWAY DATA TABLE: 3 SUMMARY OF DISCHARGE: 1 Enclosures reflect changes to flooding sources affected by this revision_ FIRM - Flood Insurance Rate Map;— FBFM - Flood Boundary and Floodway Map; — FHBM -Flood Hazard Boundary Map FLOODING SOURCE(S) & REVISED REACH(ES) Boise River - from approximatefy 7,270 feet downstream of Linder Road to approximately 300 feet upstream South Channel Boise River Eagle Island - from approximately 4,750 feet downstream of Linder Road to approx<mately 300 feet upstream South Channel Boise River Right Overbank - from approximately 1680 feet downstream of Linder Road to approximately 770 feet upstream SUMMARY OF REVISIONS Flooding Source Effective Flooding Revised Flooding Increases Decreases Boise River Zone AE Zone AE YES YES BFEe BFEs YES YES Floodway Floodway YES YES South Channel Boise River Eagle Island Zone AE Zone AE YES YES BFEs BFEs YES YES Floodway Floodway NONE YES South Channel Boise River Right Overbank Zane AE Zone AE YES YES BFEs BFEs YES YES NO Floodway Floodway YES NONE BFEs - Base 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 (LOMB) 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 anftr 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. Ifyou have any questions about this document, please contact the FEMA Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 6730 Santa Barbara Court, Elkridge, MD 21075. Additional Information about the NFIP is available on our website at httpllwww.fema.govinfip. 9 P Siamak Esfandiary, Ph-D., P-E_, CFM, Program Specialist Engineering Management Branch Mitigation Directorate 11255310.3.1.07100642 02-I-A-C Page 2 of 4 Issue Date: April 30, 2010 Effective Date; September 17, 2010 Case No.: 07-10-0642P LOMR-APP ;4ART,yr �= Federal Emergency Management Agency YZ PR= � °y Washington, D.C. 20472 LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) _ COMMUNITY INFORMATION APPLICABLE --NIM REGL-LATI0NSlC0ArL 1 L:vITy OBLIGATTON We have made this determination ptuisuant 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 LOMB, are the minimum requirements for continued NFIP participation and do not supersede more stringent State/Commonwealth or local requirements to which the regulations apply. C011M[Jlti'ITY REINJEEN7DERS We based this determination on the base (1-percent-annual-chance) flood discharges computed in the FIS for your community without considering subsequent changes in watershed characteristics that could increase flood discharges. Future development of projects upstream could cause increased flood discharges, which could cause increased flood hazards. A comprehensive restudy of your community's flood hazards would consider the cumulative effects of development on flood discharges subsequent to the publication of the FIS report for your cominunity and could, therefore, establish greater flood hazards in this area. Your community must regulate all proposed floodplain development and ensure that permits required by Federal and/or State/Conmionwealth lav 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/Connnonwealth 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 LOMB 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 LOAM by preparing a news release for publication in your conunnunity s newspaper that describes the revision and explains how your community will provide the data and help interpret tine 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 Map Information eXchange (FMIX) toil free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 6730 Santa Barbara Court, Elkridge, MD 21075. Additional Information about the NFIP is available on our website at httpJhwwvw.tma.gov/nfip. Siamak Esfandiary, Ph.D., P.E., CFM, Program Specialist Engineering Management Branch Mitigation Directorate 11255310.3.1.07100642 102-1-A-C Page 3 of 4 Issue Date: April 30, 2010 Effective Date: September 17, 2010 Case No.: 07-10-0642P LOMB-APP rte. ~ . Federal Emergency Management Agency ')0 �¢ Washington, D.C. 20472 x1. 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 connuunity and FEMA. For information regarding your CCO, please contact: Mr. Mark Carey Director, Mitigation Division Federal Emergency Management Agency, Region X Federal Regional Center 130 228th Street, Southwest Bothell. WA 98021-8527 (425) 487-4582 STATUS OF THE COMMUN-= NFIP MAPS We will not physically revise and republish the FIRM and FIS report for your community to reflect the modifications made by this LOMB 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 Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1 -877 -FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 6730 Santa Barbara Court, Elkridge, MD 21075. Additional Information about the NFIP is available on our website at httpaAvww_fema.gov/nfip. f Siamak Esfandiary, Ph.D.. P.E., CFM, Program Specialist Engineering Management Branch Mitigation Directorate 11255310.3.1.07100642 102 -1 -A -C Page 4 of 4 Issue Date: April 30, 2010 Effective Date: September 17, 2010 Case No.: 07-10-0642P LOMR-APP tltt� iE Federal Emergency Management Agency Washington, D.C. 20472 D S�G� LETTER OF MAP REVISION DETERMINATION DOCUMENT (CONTINUED) PUBLIC NOTIFICATION OF REVISION PUBLIC NOTIFICATION FLOODING SOURCE LOCATION OF REFERENCED ELEVATION BFE (FEET.NAVD 88) MAP PANEL EFFECTIVE REVISED NUMBER(S) Boise River Just downstream of Linder Road 2,520 2,518 16001CO135H Approximately 3,050 feet downstream of Linder Road 2,513 2,512 16001C0141 H South Channel Boise River Approximately 125 feet downstream of Linder Road 2,518 2,519 16001CO141H Eagle Island Approximately 1,825 feet downstream of Linder Road 2,515 2,514 16001CO141H South Channel Boise River Approximately 1,800 feet downstream of Linder Road 2,514 2,513 16001CO141H Right Overbank Approximately 900 feet downstream of Linder Road 2,517 2,516 16001CO141H Within 90 days of the second publication in the local newspaper, a citizen 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 vire receive during this appeal period. Until this LOMR is effective. the revised BFEs presented in this LOMB may be changed. A notice of changes will be published in the Federal Register. A short notice also will be published in your local newspaper on or about the dates listed below. Please refer to FEMA's website at https:/hir%x.floodnmps.fema.gov/fhm/Scripts/bfe_maimasp for a more detailed description of proposed BFE changes, which will be posted approximately within a week of the date of this letter. LOCAL NEWSPAPER Name. The Idaho Statesman Dates: May l3, 2010 and May 20.2010 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 Map Information eXchange (FMIX) toll free at 1-877-336-2627 (1-877-FEMA MAP) or by letter addressed to the LOMC Clearinghouse, 6730 Santa Barbara Court, Elkridge, MD 21075. Additional Information about the NFIP is available on our website at httpaAvww-fema.gov/nfip. Siamak Esfandiary, Ph.D.. 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