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HomeMy WebLinkAboutItem 4.09 Flood Insurance Program Report X56 AGENDA STATEMENT CITY COUNCIL MEETING DATE: November 13 , 1990 SUBJECT: Information Report on Flood Insurance Program Report by: Victor Taugher EXHIBITS ATTACHED: 1) Letter of October 15, 1990 from Department of Water Resources to Mayor Moffatt 2) Map Showing Areas Within Dublin (Excluding Camp Parks and Santa Rita) that may be Subject to Floods RECOMMENDATION: �k"V 1) Receive Report. FINANCIAL STATEMENT: No Financial Impact. DESCRIPTION: The Federal Government established a National Flood Insurance Program in the mid 1970 ' s. The purpose is to restrict building in flood prone areas in order to mitigate costs of flooding. Any property financed by an institution that receives any Federal funding, such as Banks and Savings & Loans must purchase flood insurance if within areas subject to flooding. In addition cities are required to have ordinances that restrict construction in flood areas. Ordinance 42-87 satisfies the Federal Government. The impact of these regulations in Dublin is minimal. There are 62 single-family dwellings; 16 multi-family buildings containing 118 dwelling units; and 40 non-residential buildings subject to Ordinance 42-87 . According to the Department of Water Resources there are 28 flood insurance policies in effect in the City. Zone A on Exhibit 2 are the areas affected by these regulations. In the area west of Interstate 680, the ground surface is very close to the flood elevation. In the residential areas the houses have raised wood floors and therefore are well above the estimated flood level. The floor level of the buildings along Amador Plaza Road are at, or above, the estimated flood level. Some of the older buildings along Scarlett Court may be affected, but the buildings built in the County after establishment of the flood zones, in the middle 1970 's are above the estimated flood level. The attached Department of Water Resources letter notes there are serious engineering, or other problems with the maps or Flood Insurance Study. This concern has resulted from the maps being out of date. Since the maps were prepared in 1974, there have been many flood control improvements constructed. Channels have been constructed in the Scarlett Court area and many improvements have been made down stream in Pleasanton. This may reduce or eliminate the area subject to flooding in the Scarlett Court area. Staff intends to request the Federal Government to do a Local Map Maintenance Program. This program financed by the Federal Government would result in the updating of maps based on the latest flood control improvements. This could result in reducing or eliminating the areas subject to flooding and thus may reduce insurance costs to Dublin property owners. ----------------------------------------------------------------- ITEM NO. 440 # COPIES TO: GEORGE DEUKMEJIAN, GO--Of STATE OF CALIFORNIA-THE RESOURCES AGENCY DEPARTMENT OF WATER RESOURCES CENTRAL DISTRICT ~� /, , �. 3251 SSTREET -� ,., SACRAMENTO �G��d �� ��� ' /p, 95816-7017 October 15, 1990 ,O�i,� V n,01 RAJ, Mr. Paul Moffatt, Mayor City of Dublin 6500 Dublin Boulevard Dublin, CA 94568 Dear Mr. Moffatt: This letter is to notify you of findings of a Community Assistance Visit to the City of Dublin. On October 9 , 1990, B. J . Smith met with your staff to discuss the City's administration of its Flood Damage Prevention Ordinance (No. 42-87) as part of the Federal Emergency Management Agency's Community Assistance Program. The program is designed to provide assistance in administering federal regulations related to the National Flood Insurance Program. Your staff appears Ito be doing a good job of enforcing your ordinance, and they are to be commended for their efforts toward mitigation of flood hazard areas and implementation of your floodplain management program. FEMA has agreed to provide guidance to your staff in applying for a restudy of a portion of the city's flood hazard area. Copies of this letter and report are being forwarded to Mr. Victor Tauger and the FEMA regional office. Please thank your staff for their cooperation in the Community Assistance Visit process. If you have questions related to this report please contact Mark Stuart at (916) 527-6530. If you have any other questions or are need of assistance related to the federal regulations, please contact Michael Norris at (916) 445-6518. Sincerely, �.` Jerry D. Vayder, Chief Central District (( Enclosure cc: Mr. William M. Medigovich Mr. Victor L. Tauger Regional Director Building Official Federal Emergency Management Agency City of Dublin Region IX, Building 105 P. 0. Box 2340 Presidio of San Francisco Dublin, CA 94568 San Francisco, CA 94129 �� � T1 FEDERAL EMERGENCY MANAGEMENT AGENCY COMMUNITY VISIT REPORT SECTION I 1. NAME =COMMUNITY T6. AGENCY 3. COMMUNITY ID NUMBER 14. COUNTY FBb 060705 Alameda DUCTED BY 7. DATE OF VISIT h e t. of Water Resources October 9,1990 SECTION 11 LOCAL OFFICIAL 9. TELEPHONE NO. 1'auger (415) 833-6620 S OF LOCAL OFFICIAL x 2340, Dublin, CA 94568 SECTION III - FINDINGS PART A RESPONSE QUESTIONS - Select appropriate response. Serious Mlnor None 1. Are there problems with th6 community's floodplain management X regulations? 2. Are there problems with the community's administrative/enforcement X procedures? 3. Are there engineering or other problems with the maps or Flood Insurance X Study? 4. Are there any other problems In the community's floodplain management X program? renalev'I blems with the Biennial Report data? YES X NO y programmatic Issues or problems Identified? YES X NO y potential violations of the community's floodplain management regulations. ential violation or violations has/have been Identified. olations have been Identified. ns are being taken on the part of the community to remedy the violations) Identified durng the CAV. ................=7.- ...... . .. ......... ........... ........................ ........ ............. FLOODPLAIN MANAGEMENT PROGRAM COMMUNITY ASSISTANCE VISIT City of Dublin October 9,1990 PART B — NARRATIVE 1. Background The City of Dublin entered the regular phase of the National Flood Insurance Program (NFIP) on September 9,1982. The last Community Assistance Visit was on March 21,1984. Since its incorpora- tion in 1982, Dublin has grown steadily to its current population of about 24,000 -people. There has been some channelizing of streams within the city. The County Flood Control and Water Conserva- tion District (FCWCD) has responsibility for maintaining the channels. In addition to its flood dam- age prevention ordinance, Dublin uses the county's Waterway Protection Ordinance, which requires a setback from active streams, to regulate development along streams within the city. Historically, the city has experienced very little in the way of flood damage. The only residential de- velopment in a flood hazard area, west of Interstate 680 and north of Amador Valley Boulevard (a pre—FIRM development) did not flood in 1983 or in 1986. Most of the flood insurance policies in the city are for residences within this area. City staff believes that this area should be reclassified as Zone B or Zone C on the Flood Insurance Rate Map (FIRM). According to FEMA statistics for December 31,1989, there are 28 flood insurance policies in effect in the city, including 16 "write—your—own"policies, with a total coverage of $2,762,000. In the last year, the city has issued five building permits in flood hazard areas, all for additions to existing structures. All permits were certified to be in compliance with the city's ordinance. No vari- ances were granted for structures in flood hazard areas. 2. Reference Part A, Questions 1-4 [1]0n September 14,1987, the City of Dublin adopted Ordinance No. 42-87 to amend the city's flood damage prevention ordinance to comply with revised NFIP requirements adopted in 1986. The revised ordinance is compliant with current Federal regulations. The city's Building Official, currently Mr. Victor L. Tauger, is designated as the floodplain administrator. [2]City officials appear to be doing a good job of enforcing their floodplain regulations. [3]The city has developed a large—scale base map with a contour interval of four feet, which indicates that the ground elevation in the flood hazard area along Line J-3 west of Interstate 680 and north of Amador Valley Boulevard is at or near the base flood elevations shown on the FIRM. City officials believe this area should be re—mapped as Zone B or Zone C on the FIRM. FEMA (Ms. Elkins) is to provide the city with guidance to request a restudy under the Limited Map Maintenance Program (LMMP) for this area. The city recently annexed an extensive area which extends the corporate lim- its to approximately the county line to the east, north of Interstate 580. The annexed area was mapped as part of the unincorporated area of Alameda County (County FIRM Panel 115). City offi- cials believe the Flood Insurance Study and FIRM are adequate for this area. 41 N/A 3. Programmatic issues N/A 4. NFIP Flood Damaged Property Purchase Program (Section 1362) N/A 5. E.O. 11988 Floodplain Management N/A 6. Other Findings A field survey checked all flood hazard areas within the city, including the recently annexed area to the east. The only problem noted was a need for channel maintenance along the Chabot Canal be- tween Interstate 580 and 5th Street in Camp Parks. City officials were advised to request mainte- nance from the FCWCD. 7. Follow-up FEMA will provide guidance to the city in applying for a LMMP restudy of the area noted above. 8. Community.Action Needed City officials intend to apply for a restudy under the LMMP for the area noted above. They should request the County FCWCD to maintain the flow capacity of the Chabot Canal as needed. 9. Interview Participants City of Dublin Victor L. Tauger, Building Official Department of Water Resources B. J. Smith Federal Emergency Management Agency Susan Elkins A A ................. 011 n'E rS 0�7 '7 J---------- V5MLIE 7 �P ji L: 2 ----------- ----EEH�� all 'Ice D, C ZONE B Areas between limits of the 100-year flood and 500-year flood ; or certain areas subject to 100-year flooding with average depths less than one foot or where the contributing drainage. -e , area is less than one square mile (Medium Shading) ZONE A Areas of 100-year flood; base flood elevations and flood hazard factors not determined (Dark- Shadin