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<br /> <br />Gaynor lakes are located about 2 miles south of longmont. <br />Studies Indicate that West Gaynor lake would be adequate in size to <br />store the 500-year storm runoff from the area upstream from the <br />lake. East Gaynor lake has a surface area of approximately 64 acres. <br />Flood control storage was computed to be 180 acre-feet. <br /> <br />Flood plain zoning can be an effective method for prevent- <br />ing future flood damages. To date, flood plain zoning in Boulder <br />arid Weld Counties has been instituted where flood plain information <br />is available. Fe~eral Iy-related financial loans for building pur- <br />poses in Identified special flood hazard areas require flood insur- <br />ance on the property. <br /> <br />Other factors and their Impacts - Flood damages are also <br />possible In the event of large amounts of runoff from tributaries <br />or small drainageways flowing into Dry Creek. Crops, roads, and <br />farm buildings could receive some damage from these small streams. <br />Although the study area Is relatively free of urban development, <br />the ,Dry Creek basin has experienced some residential growth. If <br />this growth continues, flood damages could occur In the event of <br />future flood inn. The flood damage potential In the Dry Creek basin <br />could be reduced by Implementing flood emergency plans and sound <br />flood plain management concepts. <br /> <br />Flood warning and forecasting - The National Oceanic and <br />Atmospheric Administration (NOAA), National Weather Service, supplies <br />weather forecasts at least twice daily for the area. Special fore- <br />casts of severe storms, flood warnings, and snowmelt advlsaries of <br />a general nature are also Issued as required. Radar observation of <br />Intense precipitation and projection of storm movement gives some <br />lead time for flash flood warnings; this Information Is promptly <br />disseminated to all news media and local officials by the best com- <br />munications available. <br /> <br />12 <br /> <br /> <br />Flood fighting and emergency evacuation plans - the <br />Boulder and Weld County Civil Defense Offices coordinate disaster <br />activities with the State Civil Defense Office. They feel that <br />they have adequate organization to meet any emergency. <br /> <br />Material storage on the flood plain - Floatable manmade <br />material stored on the flood plain is often washed away during <br />floods with the potential of collecting at points downstream. The <br />flood plain' In the study reach is relatively clear of such mate- <br />rials. When floatable objects are stored on the flood plain, they <br />should be secured In some fashion. Other floatable material, such <br />as trees, branches, brush, and logs, Is in evidence along the <br />stream. This material could form obstructions to floodflows, <br />especially at bridges, in the event of a flood. <br /> <br />13 <br />