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Last modified
1/25/2010 6:27:37 PM
Creation date
10/4/2006 11:51:42 PM
Metadata
Fields
Template:
Floodplain Documents
County
Gilpin
Community
Black Hawk
Basin
South Platte
Title
Hydrologic Analysis for the 1980 Black Hawk Floodplain
Date
2/2/2001
Prepared For
Gilpin County
Prepared By
Love & Associates, Inc.
Floodplain - Doc Type
Flood Documentation Report
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />I <br />I <br />II <br />I <br />I <br />I <br /> <br />The following production facilities and key capabilities are available at the offices of <br />Love & Associates, Inc. at its Louisville, Colorado headquarters: <br /> <br />Hardware: <br /> <br />* Each staff member has a computer on their desk ( most of which are <br />Pentium III - 450 to 800 mhz systems) <br />* Hewlett-Packard Designjet I 050C Plotter - 'E' Size <br />* Oce-Bruning Blueprint Machine <br />* Canon NP-4050 copier with sorter/stapler <br />* Hewlett Packard Officejet Fax Machine <br />* Hewlett Packard 4000T LaserJet High Speed Letter Quality Printer <br />* Hewlett Packard 5100cxi Scanner <br />* Hewlett Packard 1120C - Color Printer capable of II" x 17" printing <br />* Cellular Phones and pagers <br />* Calcomp Drawing Board III - Model 34600 (44" x 60") digitizer. <br /> <br />Software: <br /> <br />Windows 98, Windows NT <br />Microsoft Office 2000 Professional <br />AutoCADD Release 2000 <br />AutoCADD Map 2000 <br />Softdesk - Civil/Survey 8.0 including DCA for earthwork <br />HEC-I, HEC-2, HEC-RAS, HY-8, TR-20, TR-55, Flowmaster, <br />UDSEWER, <br />UDCUHPPC, UDSWMMPC and a variety of civil programs including a <br />Multitude of programs developed in-house. <br /> <br />PROJECT APPROACH: <br /> <br />The objective of this study is to reconstruct the hydrologic analysis for the 1980 <br />Floodplain Information Report for North Clear Creek, Gregory Gulch, and Chase Gulch, <br />in the City of Black Hawk, Colorado (City). The study tasks include: <br /> <br />I. Obtain information on soils, hydrologic parameters, and land use for the <br />North Clear Creek, Gregory Gulch, and Chase Gulch watersheds, <br />2. Delineate sub-watersheds and probable flow paths using topographic maps <br />provided by Colorado Water Conservation Board (CWCB), <br />3. Calculate flood hydrology for the 10,50, and 100-year storms for North Clear <br />Creek, Gregory Gulch, and Chase Gulch using TR-20 with SCS Type II <br />precipitation distribution and 1980 land use at approximately 10 design points <br />within the study area, <br />4. Calibrate the TR-20 model to 1980 flood peak predictions for North Clear <br />Creek, Gregory Gulch, and Chase Gulch using the curve number and, if <br />necessary, rainfall distribution, <br /> <br />-8- <br />
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