FLOOD05309

• Designation Number: 270
• County: Adams
• Community: Westminster
• Basin: South Platte
• Title: Resolution - FPR 270 - FAHD - Big Dry Creek & Tributaries
• Date: 11/1/1986
• Designation Date: 12/1/1987
• Prepared By: CWCB
• Floodplain - Doc Type: Resolution

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Countryside Creek, and

North Branch Walnut Creek; and

WHEREAS, Standley Lake, on Big Dry Creek, and Great Western Reservoir, on

Walnut Creek, are both water supply reservoirs which provide significant

inadvertant flood routing capabilities which reduce the IOO-year discharges

downstream from the reservoirs; and

WHEREAS, the Board has previously adopted a "Policy for Oelineation of

Floodplains Below Water Supply and Other Non-Flood Control Reservoirs"

(Resolution No. 36, Series of 1986); and

WHEREAS, the policy requires that non-flood control reservoirs not be

considered in the drainageway hydrology unless adequate assurances have been

obtained to preserve the flood routing capability of the reservoirs; and

WHEREAS, the Board has previously authorized the Executive Director to

~. enter agreement(s) with Westminster and/or Broomfield to obtain adequate

assurances for Standley lake and Great Western Reservoir (Resolution No. 45,

Series of 1986); and

WHEREAS, the flood hazard area delineation studies for Big Dry Creek and

Walnut Creek in IlFlood Hazard Area Del ineation, Westminster Areal! were completed

on the assumption that adequate assurances would be provided for Standley lake

and Great Western Reservoir; and

WHEREAS, adequate assurances have not been provided as of this date for

either Standley lake or Great Western Reservoir, but negotiations are on-going

with both Westminster and Broomfield to obtain adequate assurances; and

WHEREAS, the Board wishes to accept the flood hazard area delineation

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report and transmit it to the local governments and the Colorado Water

Conservation Board because of the many floodplain delineations contained in the

report for the other drainageways listed above;

NOW, THEREFORE, BE IT RESOLVED THAT:
1. The Board of Directors of the Urban Drainage and Flood Control

District accepts the report lIFlood Hazard Area Delineation,

Westminster Area", November, 1986 by Greiner Engineering Services.

Inc. and recommends its use as a guide in future planning related to

the floodplains contained therein;

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