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<br />t <br />t <br />t <br />t <br />t <br />t <br />~ <br />t <br />t' <br />. <br />t' <br />. <br />~, <br />~, <br />~, <br />~, <br />~, <br />~ <br />.' <br />~ <br />. <br />~ <br />. <br />~ <br />~ <br />~ <br />~ <br />~ <br />~ <br />.. <br />~ <br />. <br />~ <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />The dissemination points in within Douglas County include the DCSDC, Parker Public <br />Works (engineering), Parker Public Works (operations), Parker Fire Department. Parker <br />Police Department, and Skyview Weather. <br /> <br />Weather Prediction and Warning Resources. Recommendations <br /> <br />The following recommendations, if implemented by the County and adopted by the <br />prediction agencies listed in Section 3.0, should provide assistance with regard to <br />meteorological, hydrological prediction and flood warning, within Douglas County. <br /> <br />3-1 Determine basin average rainfall criteria, specific to individual major drainage <br />basins for the 2-year, 5-year, 1D-year, 25-year, 50-year, 1 DO-year, and 5DD-year <br />recurrence intervals for durations of 1-hour, 3-hours, 6-hours, 12-hours and 24- <br />hours. Develop criteria through depth/duration/frequency (DDF) and <br />intensity/depth/frequency (IDF) analysis using precipitation observation from <br />UDFCD rain gages, NWS Cooperative Observer rainfall observations and Design <br />Storm information. <br /> <br />3-2 Determine drainage basin hydrologic characteristics such as soil types, time of <br />concentration, percent of imperviousness, area, and slope. Determine <br />antecedent moisture affects on basin time of concentration. <br /> <br />3-3 Determine watercourse discharge, velocities, and depths based on all the basin <br />average rainfall criteria information calculated in recommendation 3-1. <br /> <br />3-4 Develop GIS-based flood maps that depict water inundation and water depths <br />associated with a 25-year, 50-year, 1 DO-year, and 5DO-year recurrence intervals <br />on East Plum Creek, Plum Creek, East Cherry Creek, West Cherry Creek and <br />Cherry Creek. <br /> <br />3-5 Determine depth and duration rainfall criteria utilizing the information calculated <br />in recommendations 3-1 through 3-4, that if predicted would prompt flood <br />advisories watches and warnings. <br /> <br />4.0 Weather Detection Resources <br /> <br />Weather detection information within Douglas County that can be utilized in real-time <br />and near real-time to assist predictors and county decision makers includes rain gages, <br />stream gages, weather stations, fixed location video cameras and a trained weather <br />spotter network. Other weather detection information that is not located specifically in <br />Douglas County, but has been determined to be useful on an operational basis, includes <br />the Front Range (FTG) NWS Nexrad 88-D Doppler radar, Pueblo (PUX) NWS Nexrad <br />88-D Doppler Radar and Cloud to Ground lightning data. The following is a description <br />of the detection information within Douglas County, listed by the agency that is <br />responsible for the information. <br /> <br />20 <br />