FLOOD10617 (2) - Laserfiche WebLink

Home Browse Search

The results of this study were reviewed at a final community coordination meeting held on JUly 18, 1978. Attending the meeting were representatives of the PIA, the study contractor, and the city. This study incorporates all appropriate comments, and all problems have been resolved. The City of Longment Engineering Department supplied zoning and corporate boundary maps for use in the initial study for the City of Longment, as well as various detailed drawings for channel improvements, such as final construction plans for the Spring Gulch Linear Park and sto~ drainage facilities, dated January 1973, and the structural plans for the Pratt Street bridge, over the St. Vrain Creek. The Ci ty of Longment Planning Department has supplied a copy of the St. vrain Comprehensive Plan (Reference 5), which describes the comprehensive plan for what is called the Prime Urbanized Area (PMA) of Longment. The Planning Department also provided a copy of the floodplain and floodway zoning ordinance, and various historical aspects of flooding and community development. Meetings were held with the City Planning and Engineering Department's staff on July 23, 1974; May 14, 1975; and December 30, 1975, to discuss detailed aspects regarding the streams studied. The USACE, Omaha District, provided mapping of the St. Vrain Creek and parts of Lefthand Creek, Dry Creek No.1, and Spring Gulch (Reference 6). Computer input regarding the hydrology and hydraulic analyses for the St. Vrain Creek and Lefthand Creek were also provided by the USACE. The floodplain information reports completed by the USACE in January 1969 for Lefthand Creek (Reference 7) and in June 1972 for Lower St. Vrain Creek (Reference 8) served as an important basis for comparison in this study. On October 16, 1974, a conference was held with the USACE to gather additional info~tion on Longment and to review potential problems. The USGS was contacted to obtain historic floodflow data (References 9, 10, and 11). Maps of floodprone areas, prepared by the USGS, showing approximate floodplain delineations at a scale of 1:2,400 were also reviewed (Reference 12). At a meeting on August 27, 1974, attended by representatives of the UDFCD, FENA, and Gingery Associates, Inc., study reaches and methods for the initial study were decided. An additional meeting was held on January 24, 1975, in Washington, D.C., to further clarify the purpose of the study and the methods used for floodplain delineations. Other agencies and individuals contacted for background info~tion included the CWCB, the Colorado Highway Department, and the Longment Daily Times-Call newspaper. Private citizens of Longment were also interviewed regarding past floods, high-water marks, and flood damage. 4