FLOOD03253

• County: Boulder
• Community: Boulder
• Stream Name: South Boulder Creek
• Basin: South Platte
• Title: South Boulder Creek Draft Hydrology Study Phase III
• Date: 2/10/2000
• Prepared For: UDFCD
• Prepared By: Taggart Engineering Associates, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE OF CONTENTS (Continued)

FIGURES (Continued)

Figure V -1 6 Unit Discharges
Floodplain Area. Element 44 to Boulder Creek . . . . . . . . . . . . . . . .. V-24
Figure V-17 South Platte River Basin Subregions .................... V-26
Figure V-18 Subregion SPL-3: Central Foothills ..................... V-27
Figure V-19 Subregion SPL-5: Mountains ......................... V-28

TABLES

Table 1-1 Draft Summary 100-Year Flood Hydrology Comparisons
South Boulder Creek (SBC) and West Valley Overflows (wvo) ....... 1-10
Table 11-1 Features Directly Affecting West Valley Spillage
and Local Drainage ..........,.......................... 11-8
Table 11.2 Historical Peak Discharges on South Boulder Creek
at Gaging Station Near Eldorado Springs ...................... 11-9
Table 111-1 Watershed by Elevation Zone ........................... 111-1
Table 111-2 Area Reduction Factors vs, Duration ......,.............,. 111-3
Table 111-3 Percent of Concurrent Storms and Rainfalls of Quartile 1
for the Front Face Rockies (South) ......................... 111-11
Table IV-1 Representative SCS Curve Number,
Soil Types, and Land Condition ............................ IV-3
Table IV-2 SCS Curve Number and Comparable Horton's Infiltration
Parameters for South Boulder Creek 24 Hour Precipitation . . . . . . . . . . IV-4
Table V-l CUHP and Base SWMM Model Comparison .........,...... V-19

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