FLOOD09312

• Designation Number: 370
• County: Crowley
• Community: Ordway
• Stream Name: Local Drainage
• Basin: Arkansas
• Title: Floodplain Study and Master Drainage Plan - Ordway, Colorado
• Date: 6/1/1987
• Designation Date: 7/1/1994
• Floodplain - Doc Type: Floodplain Report/Masterplan

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47

management problems will have been addressed, Additionally, the Town will
have adequate drainage outfall facilities to accOll1nodate the growth antici-
pated to occur in the Town.
Tab 1 e 15 presents the cos t by Phase.

Street Improvement Plan
The proper long-term functioning of a drainage system is heavily depen-
dent upon the control of sediments and debris which are available to enter the
system. In the Town of Ordway, streets with adequate wearing surfaces and/or
streets with curb and gutter are relatively few in number. This is par-
ticularly true on Railroad Avenue, 2nd, 3rd, 4th and 5th Streets, west of Main
Street, and on Lincoln, Otero, and Arkansas Avenues. As well as creating a
shallow flooding problem to residences along these streets, the disrepair of
street right-of-ways will send sediment into the closed conduits or open chan-
nels proposed herein, and cause a reduction of flow capacity, and an increased
ma i ntenance respons i bil i ty for the Town. A street system wi thout an adequate
storm inlet and conveyance system, will cause a more rapid deterioration of
roadways, compared to a street with adequate surface drainage. Conversely, a
storTlltlater system draining a street system without an erosion resistant
wearing surface, can substantially increase the annual cost of the stormwater
management facilities.
Accordingly, the following recommendations have been developed to enhance
the successful implementation of the stormwater management system:

1. The construction of storm sewers within the Central Basin should be coor-
dinated to the greatest extent possible with a street improvement pro-
jects for Railroad, Arkansas, Otero, Lincoln, and Colorado Avenues.

2. Street improvements should include installation of curb and gutters,
minor adjustments of street and intersection grades, and driveway cuts.

3. The "Street and Storm Drainage Design Criteria Manual" should be adopted
by ordinance. New developments must adhere to the criteria when laying
out a subdivision or commercial property. Conformance to this manual
will insure that future development does not create a long-term capital
improvement and maintenance liability for the residents of Ordway,

4. In applying for State or Federal financial assistance to fund the impro-
vements identified herein, costs for only the storm drainage improvements
should be considered when developing the funding request cost estimate,
and paving projects funded separately.