Board Meeting 05/20/2002 - Laserfiche WebLink

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Community response: The CWCB staff transmitted a letter dated April 24, 2002 to the Town of Ayon floodplain administrator as notification of the proposed designation action for the subject Flood Insurance Study. The Town has not yet transmitted a letter to the CWCB requesting formal Board action on their floodplain information, howeyer preliminary contact has indicated that they are receptiye to discussing the proposed action, and further cOll1l1lunications and/or a meeting will be held with the Town in the near future. In the past, the Town has been somewhat resistant to the idea of publishing new regulatory floodplain information, howeyer recent deyelopment in the area may change the perceiyed need. The CWCB's consultant will also be perrorming fieldwork to assist with the completing of a new floodplain information report. Any issues that may arise during the continuing teclmical reyiew will be fully discussed and resolyed, with the Town's approyal, prior to CWCB staff transmitting a signed floodplain resolution. Staff findings: The subject Flood Insurance Rate Map for A yon does not currently depict any flood hazard information and therefore new information will be deyeloped as appropriate by the CWCB's consulting fum. CWCB staff will ensure that all new data deyeloped for Ayon is in conformance with the CWCB's rules and regulations for floodplain designation and approyal. Staff recommendation: Staff recommends that the Board: 1) designate and approye the 100-year detailed and approximate floodplain information contained in said report within the Town of Ayon, and 2) authorize staff to prepare a floodplain resolution to be signed by the Director and transmitted to the Town of A yon and FEMA. This action is recommended in order to meet statutory requirements. 2) Al!enda Item 3.b Floodplain Resolution Number: FPR 01-561 Affected Community: Town of Gypsum Name of study to be fonnally acted on: "Flood Insurance Study, Town of Gypsum, Eagle County, Colorado" dated September 1983- prepared by the Federal Emergency Management Agency. Studied Streams: The FIRM contains both approximate and detailed studies. Detailed studies haye been conducted on a portion of the Eagle Riyer and Gypsum Creek, while approximate floodplains haye been deyeloped for a small portion of the Eagle Riyer east of town. An unstudied ephemeral stream also drains from the northeast and crosses Interstate 70. The studied stream reaches are in the Colorado Riyer watershed. Technical Issues: Based on the GIS information ayailable, the Town's corporate limits haye changed significantly and haye expanded into four separate areas. This includes a large area south of town, a large area east of Town and a smaller area southwest of Town. In addition, the Town center has expanded to the West. Because the Town limits haye expanded since the time of the study, approximate floodplains will be deyeloped to include Hard Scrabble Gulch and an unnamed tributary just south of Gypsum (both are tributaries to Gypsum Creek). Debris flow hazards exist in recently annexed areas of the community. Major teclmical problems with the current data haye not been identified in the study and the associated LOMR. New floodplain information for Gypsum along the Eagle Riyer is being deyeloped by a partnership effort including assistance from the CWCB staff. A draft Eagle County Flood Insurance Rate Map at the east end of the community (located near a mobile home community) shows a large floodplain area. The County is now undertaking a continuation from that location downstream. Community response: The CWCB staff transmitted a letter dated April 24, 2002 to the Town of Gypsum floodplain administrator as notification of the proposed designation action for the subject Flood Insurance Flood Protection. Water Project Planning and Financing. Stream and Lake Protection Water Supply Protection. Conservation Planning 3