FLOOD07425

• County: Boulder
• County: Weld
• Community: Boulder, Weld County
• Stream Name: Coal Creek, Rock Creek
• Basin: South Platte
• Title: Flood Hazard Analyses
• Date: 10/1/1976
• Prepared For: Weld County
• Prepared By: USDA Soil Conservation Service
• Floodplain - Doc Type: Floodplain Report/Masterplan

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FLOOD HAZARD ANALYSES

COAL CREEK AND ROCK CREEK
BOULDER AND WELD COUNTIES, COLORADO

This flood hazard analyses report presents the results of a study

on the flood plain lands of Coal Creek and Rock Creek in Colorado. It

was prepared by the U. S. Department of Agriculture, Soil Conservation
Service, in cooperation with the Colorado Water Conservation Board, the
Urban Drainage and Flood Control District, the Coal Creek Water Users
Association, Boulder and Weld Counties.

Primary purpose of this report is to provide large scale detailed

mapping of the flood hazard areas and to update flood hazard studies

which were conducted previously. Without detailed mapping, it is very

difficult to implement a workable flood plain management program which

will minimize potential flood losses. Detailed flood hazard maps are

needed to administer flood plain management regulations. Included in

the report are engineering and hydrologic data which will facilitate the

use of the maps. The data should be useful in developing a master

drainage plan, in road and bridge plans and design, and in the planning

of channel modification, and flood control structures - if needed. The

report contains interpretations of the flood hazard analyses and recom-

mendations to reduce flood damages. However, it is beyond the scope of

this study to provide specific proposals or plans to rectify the flooding

problems.

This study was requested by Boulder and Weld Counties, and the

Urban and Drainage Flood Control District through the Colorado Water
Conservation Board (CWCB). As coordinator for all water studies in the

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