FLOOD02643

• County: Denver
• Community: Northeastern Colorado
• Stream Name: South Platte and Tributaries
• Basin: South Platte
• Title: Post Flood Report South Platte Floods of May-June 1973
• Date: 7/1/1974
• Prepared For: State of Colorado
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Flood Documentation Report

d. The areas covered by this report, in the order
nresented, ere the South Platte Ri'lrer basin in Colorado and
Nebraska; the North Platte River bQSin in ~lyoming and Nebraska;
and the Platte River basin in NebrQSka. The most serious
flooding, and consequently the greatest degree of damages,
occurred in the Colorado portion or the South Platte River basin.
Comparatively minor flooding occur:ted in the North Platte and
Platte River basins.

3. SOURCES OF INFORMATION

a. Meteorologic data. Meteorologic data "ere obtained
from the National Weather Service, the U. S. Geological Survey,
and by survey teams from the Omaha District, Corps of Engineers.
other data were obtained from the Colorado Water Conservation
Board.

b. Hvdrologic data. HydrolOgic data on peak flood dis-
charges at various stream locations "ere obtained from the
U. S. Geological Survey, the Bureau of Reclamation, the Soil
Conservation Service, and from State agencies.

c. Flood data.

(1) The limits of flooding "ere determined from post-
flood inspections and field surveys and from aerial photographs.
In addition to the data compiled by the Corps of Engineers,
other information was furnished by the Colorado Water Conservation
Board, the Denver Urban Drainage and Flood Control District, and
by county and local officials.

(2) High "ater marks "el'e set and surveyed by Corps
of Engineers' forces.

d. Flood damage estimates. Estimates of flood damages "ere
compiled from field survey data obtained by the Corps of Engineers,
the Soil Conservation Service, anQ the Colorado Water Conservation
Board. Supplemental data were provided by the Office of Emergency
Preparedness, by State, county, and municipal governments, end by
the commercial, industrial, and private sectors of the affected
areas.' Information on relief end recovery expenditures were
obtained from the appropriate Federal and State agencies.

e. other reports. A report titled "Storm of Hay 5-6, 19'73
in the Denver /oletro Area-Frequency and Effect" was prepared by
the U. S. Geological Survey in cO()peration with the Denver Urban

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