FLOOD05775

• County: Pueblo
• Community: Pueblo County
• Stream Name: Salt Creek
• Basin: Arkansas
• Title: Floodplain Information Report
• Date: 4/1/1976
• Prepared For: Pueblo County
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Floodplain Report/Masterplan

of Salt Cr~~k below mile 3.00 contain much natural obstruction while
upstream of mile 3.00 and especially above St. Charles Reservoir No. 3
there is very little vegetation.
Manmade ob~tructions to flood flows include the several
large highway bridges, such as those at U.S. 85-87 and lnterstate
Highway 25, smaller railroad bridges and haul ro~d embankments con-
structed for train and truck traffic within the Cli' & I plant. In
several instances. these bridges ~nd haul roads pose threats to down-
stream development due to the limited capacity culverts which will
pa~s little more than base flows. Floodwaters ~y be withheld until
embankment failure which, in releasing large instantaneous volumes
of floodwat"r, creates abnormal locali~ed peaks.

~lthough St. Charles Reservoirs No. 2 and No. 3 have been
built over the historic channel. only Reservoir No. 3 is effective in

"ubstantially reducing flood flows from tho creek.

Flood flows would

pass over the Reservoir No. 3 spillway without entering Reservoir No.2.
Other constrictions to flood flows include railroad
bridgos at miles 4.58, 2.09, 1.32 and 1.09, a 30 foot wide sbarp

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crested weir at mile 10.05, an abandoned railroad crossing at mile
12.21 and a random fill embankment creating a bypass channel for the
CF~I treatment plant at ~ile 3.29.
Tablc I lists dcscriptive structural infermation for the
vario~s bridge cros"inqs and representative photographs are shown in
!'igurel.

2100d warning and Forecastinq services
The National Qctlanic and i,trno~pberic Administration
(NOAA) Weather service provides no speCific flood forecasts for
tributary streams of the Arkansas River in the Pueblo region. The
techr.o.1ogy of accurat" riv"r and flood forecasting is depend"nt
uponadWluuteandtimelyrdinfal1andriverstagedata.ltis

(lsscI>tialthdts.achbasicddtaooavailable,particularlyraillfall
reports. for area. subjoct to cloudbur"ttype stor,"s. current funding
restraints provent Weather S~rvice operation of th@ dense networks

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