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USACE CWMS - Upper South Platte Watershed


Authors: Mayss Saadoon
Owners: Mayss Saadoon · Adrian Christopher · Jason Sheeley
Resource type:Collection Resource
Created:Jun 25, 2018 at 5:27 p.m.
Last updated: Jun 26, 2018 at 1:50 p.m. by Mayss Saadoon

Abstract

The Corps Water Management System (CWMS) includes four interrelated models to assist with water management for the basin:
- GeoHMS (Geospatial Hydrologic Modeling Extension)
- ResSIM (Reservoir System Simulation)
- RAS (River Analysis System)
- FIA (Flood Impact Analysis)

Within the South Platte basin, there are three USACE reservoir projects. All are located in or near the Denver metropolitan area. The projects are Cherry Creek Dam (on Cherry Creek), Bear Creek Dam (on Bear Creek), and Chatfield Dam (on the South Platte River). Their project purposes include flood control, recreation, and fish and wildlife. In addition, Chatfield Dam is authorized for water supply. Other water municipalities, namely Denver Water and Aurora Water, own and operate an intricate water infrastructure of, among other things, dams, diversions, canals, and water treatment plants.
A few of the notable tributaries to the South Platte River include Cherry Creek, Bear Creek, Tarryall Creek, Plum Creek, Clear Creek, Boulder Creek, St. Vrain River, Big Thompson River, and Cache la Poudre River. Though the following is not an exhaustive list, the key gages in the basin include Bear Creek at Morrison, Sheridan, and Denver; Cherry Creek at Franktown, Parker, and Denver; and South Platte at Waterton, Louviers, blw Chatfield, Denver, and Henderson.
During non-flood control operations, the three USACE reservoirs are operated based on water rights criteria provided to the Omaha District by the State of Colorado. In this case, Cherry Creek and Bear Creek release inflows, while Chatfield does have some authorized water supply storage. During flood control operations, the three reservoirs target the South Platte River at Denver, Colorado stream gage. The target maximum flow at this gage is 5,000 cfs. This would include both the reservoir releases and incremental flow. During flood control operations, there are provisions aimed at balancing the amount of flood control storage present in each of the three projects.
The South Platte watershed is mountainous in the western portion while the central and eastern portions are more indicative of the high plains. Average annual precipitation in the Denver metropolitan area is approximately 16 inches – with most of this coming as rain in the April to August timeframe. The mountains receive a variable annual snowpack with places exceeding 100 inches. Snowmelt, along with spring/summer rains, promotes the flooding concerns. Bear Creek and Chatfield watersheds are affected by the mountain snow while the Cherry Creek watershed lies in the high plains portion of the South Platte Basin.

Subject Keywords

Upper South Platte,USACE,IWRSS,Corps Water Management System (CWMS)

How to cite

Saadoon, M. (2018). USACE CWMS - Upper South Platte Watershed, HydroShare, http://www.hydroshare.org/resource/85f87e3e12884036bf871be7b96b2a71

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

Sharing status:

  • Discoverable Resource  Discoverable
  • Non Sharable Resource  Not Shareable

Coverage

Spatial:

 Coordinate System/Geographic Projection:  WGS84 EPSG:4326
 Coordinate Units:  [u'Decimal degrees']
North Latitude
41.4357°
East Longitude
-100.3481°
South Latitude
38.9126°
West Longitude
-106.7454°

Collection Contents

Add Title Type Owners Sharing Status My Permission Remove
USACE CWMS - Upper South Platte Watershed CompositeResource Mayss Saadoon · Adrian Christopher · Jason Sheeley Discoverable Open Access
USACE CWMS - Upper South Platte Watershed Bank Lines GeographicFeatureResource Mayss Saadoon · Jason Sheeley · Adrian Christopher Discoverable Open Access
USACE CWMS - Upper South Platte Conversion Points GeographicFeatureResource Mayss Saadoon · Adrian Christopher · Jason Sheeley Discoverable Open Access
USACE CWMS - Upper South Platte Study Area GeographicFeatureResource Mayss Saadoon · Adrian Christopher · Jason Sheeley Discoverable Open Access
USACE CWMS - Upper South Platte Stream Align GeographicFeatureResource Mayss Saadoon · Adrian Christopher · Jason Sheeley Discoverable Open Access

Authors

The people or organizations that created the intellectual content of the resource.

Name Organization Address Phone Author Identifiers
Mayss Saadoon U.S. Army corps of engineers
Extended Metadata
Name Value
USACE Model Registry USACEModelRegistryAdmin@usace.army.mil

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