FLOOD05270

• Designation Number: 73
• County: Arapahoe
• Community: Urban Drainage & Flood Control District
• Stream Name: First Creek
• Basin: South Platte
• Title: Major Drainageway Planning - First Creek - Phase B - Volume 1
• Date: 3/1/1977
• Designation Date: 7/1/1977
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Mar.ch 31, 1977

Mrc L. Scott Tucker
Executive Director
Urban Drainage and Flood Control District
2480 West Twenty-Sixth Avenue, Suite :.56-1':
Denver, Colorado 80211

OUI Fi:.: 1140/1
DG 498/77

SIJbject

First Creek Major
Drainageway Planning-
Phase B

Dear Mr. Tucker:

We are pleased to present the Phase I': of the First Creek Drainage
Study. This report was prepared for the District under the tenDS of
our contract dated September 2/" 1973 c Th. report is presented in t\<o
volumes; Volume I containing the sunnnary ""port and Volume II cont-ain-
ing the Master Plan drawings reduced to 11" x 18". Phase B report is
complementary to the Phase A report ",hieb. ,.;as transmitted to you on
July 12, 1974 c

The purposes of this report are as fol1ow~j:

L Conduct final hydrology and hydraulic studies for the recom-
mended plan.

2c
ments
Urban
1976.

Prepare layouts and preliminary designs for drainage improve-
recommended in Plan A of the Phase 11 report, as modified per
Drainage and Flood Control Dj.strict letter of December 10,

3.

Prepare master plan drawingE, of t.he preliminary designs_

4.

Prepare cost estimates associa tee: VIi tn these improvements.

It'd r()l!'.&:t

Tabulation of maximum flows at strategic clesign points within First.
Creek drainage basin were present,eel 11\ the Phas.e A report. These maxi-
mum flows were prepared for both the pxisting a.nd future development
conditions. In this report we have presented t.he hydrographs :for 1~he
future laO-year flood at design point..

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