FLOOD07072

• County: Statewide
• Stream Name: South Platte
• Basin: South Platte
• Title: Water and Related Land Resources Management Study Volume IIIC - Appendix A
• Date: 7/14/1980
• Prepared For: South Platte and Tributaries
• Prepared By: CWCB
• Floodplain - Doc Type: Flood Mitigation/Flood Warning/Watershed Restoration

.

was general and widespread over the South Platte River basin,

several intense storm cells did occur over the Front Range west

of Fort Collins, and over Bear Creek west of Denver, The rain-

fall pattern for this storm is shown on plate 3,

STORM OF 16-17 JUNE 1965
The intense precipitation in this storm was triggered by
squall lines which were generated along a quasi-stationary front
oriented approximately north-south along the mountains in Colorado
and Southern Wyoming. During the afternoon of the 16th, heavy
amounts of rain fell on the drainage areas of East and West Plum
Creeks in the foothills near the Palmer Lake area. The average

depth of 6-hour rainfall over 1,000 square miles was 4.8 inches.
Again on the 17th, heavy rains occurred over the upper reaches of
Kiowa and Bijou Creeks in the South Platte River basin and Big
Sandy and Black Squirrel Creeks in the Arkansas River basin. The
average depth of 6-hour rainfall for this storm burst over 1,000

square miles was 7.8 inches. The isohyetal pattern is shown on
plate 4.

STORM OF 5-6 MAY 1973

A low pressure cell, with its associated frontal system and

a closed circulation aloft, moved slowly across Colorado from west

to east during the period of 5-6 May 1973. Shower activity began

over the South Platte River basin in Colorado during the evening

of 5 May and turned into steady rain in the plains and snow in

the mountains. Rainfall and snow accumulations at the end of the

storm during the evening of 6 May were heavy east of the Continental

Divide. Rainfall amounts of 6 inches or more were reported in the

Kiowa Creek basin and amounts of 4 inches or more were reported in

.

16