FLOOD06061

• County: Statewide
• Community: State of Colorado
• Stream Name: Colorado River/Great Basin
• Basin: Colorado Mainstem
• Title: Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages
• Date: 1/1/1984
• Prepared By: COE
• Floodplain - Doc Type: Educational/Technical/Reference Information

3.2.3.
3.2.3.1.
3.2.3.2.
3.2.3.3.
3.2.3.4.
3.2.4.
3.3.
3.3.1.
3.3.2.
3.3.3.
3.3.3.1.
3.3.3.2.
3.3.3.3.
3.3.4.
3.3.5.
3.4.
3.4.1.
3.4.2.
3.4.3.
3.5.
3.5.1.
3.5.2.
3.5.3.
3.5.4.
3.5.5.
3.5.6.
3.5.7.
4.

4.1.
4.1.1.
4.1.2.
4.2.
4.3.
4.3.1.
4.3.2.
4.3.2.1.
4.3.3.
4.4.
4.4.1.
4.4.2.
4.4.3.
4.5.
4.6.
4.7.
4.8.
5.
5.1.
5.2.

Modifications to index map.. ....
In areas of most-orographic effects .
In areas of least-orographic effects.
In areas of intermediate-orographic effects
Other modifications . . . . . .
Modified orographic PMP index map
Seasonal variation.
Introduction. . . .
Boundary regions. .
Indices within the region
Maximum precipitation at high elevations.
Maximum winds and moisture. .
Orographic model computations
Smoothed maps . . . . .
Supporting evidence . .
Variation with basin size
Introduction. . .
Storm data. . . . .
Adopted variation .
Durational variation.
Background. . . . .
Variation of maximum winds.
Variation of maximum moisture
Variation of relative humidity.
Orographic model computation. .
Guidance from observed precipitation.
Adopted variation . . . . . . . . . .
Local-storm PMP for the Southwestern Region and
California. . . . . .
Introduction. . . . .
Region of interest.
Definition of local storm
Storm record. . . . .
Development of l-hr PMP
Introduction. . . . .
Data adjustments. . .
Application of adjustments to dalla.
Analysis. . . . . . . . . .
Durational variation. . . . . . .
Duration of local-storm PMP. .
Data and analysis for durations from 1 to 6 hours
Data and analysis for less than l-hr duration
Depth-area relation . . . . . . .
Distribution of PMP within a basin. .
Time distribution of incremental PMP.
Seasonal distribution . . . . . . . .
Checks on the general level of PMP. . .
Introduction. . . . . . . . . . . . . . . .
Comparisons with greatest known general-storm areai
rainfalls . . . . . . . . . . . . . . . . .

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