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<br />SITE VISIT AND TRIP REPORT <br />W ALSENBURG (HUERF ANO COUNTY), COLORADO <br />OCTOBER 24, 1995 <br /> <br />Backl!round <br />On October 24, 1995 the Colorado Water Conservation Board (CWCB) conducted a field visit to <br />Walsenburg in response to a request by the City of Walsenburg and the Resource Conservation <br />and Development (RC&D) agency. The purpose of the site visit was to meet with local officials, <br />to view the floodprone areas in Walsenburg, and to gather information pertinent to potential <br />rrritigation projects. The meeting attendance is summarized in the table below. <br /> <br />Name Affiliation Phone Number <br />Larry Lang CWCB (303) 866-3441 <br />Tom Browning CWCB (303) 866-3441 <br />Hank Summers City ofWalsenbun! (719) 738-1048 <br />Don Martin Natural Resource Conservation Service (719)738-1171 <br /> <br />Issues and Findinl!s <br />Several aspects pertaining to the project area in Walsenburg were investigated during the site <br />visit. The major issues and findings for two distinct projects are described as follows: <br /> <br />Proiect #1 <br /> <br />. There is a capacity problem with the existing Number 4 Ditch (Holita Ditch) along Colorado <br />A venue due to a storm drain that outlets to the ditch on the west end. Flooding along the <br />ditch may occur during storm events as a result of flow from the storm drain entering into the <br />ditch. The peak flows at the storm sewer outfall for various recurrence intervals are unknown. <br /> <br />. The storm drain that empties into Holita Ditch was constructed in approximately 1985, <br />however design drawings and/or backup data for the project are not available at this time. <br /> <br />. Flows in the Holita Ditch drain to the east and pass through a six-foot diameter RCP culvert <br />under 1-25 to the east of the city. The upper portion of the ditch consists of a 36" diameter <br />RCP with a slope of about 0.5 to 1.0%. The Holita Ditch has a direct flow (irrigation) of 6 <br />cfs. <br /> <br />. The Holita Ditch does not appear to be maintained regularly, and is characterized by steep <br />side slopes with heavy vegetation along the banks. This geometry of this ditch is generaljy a <br />4' bottom width and I H to 1 V side slopes. The average depth is about 3 to 4 feet. <br /> <br />. The city wishes to address the potential flood hazard problems by receiving an <br />engineering/planning study that would provide the city with guidance for implementation of a <br />rrritigation project. <br /> <br />1 <br />