FLOOD04245

• County: Mesa
• Community: Grand Junction
• Stream Name: Indian Wash
• Basin: Colorado Mainstem
• Title: Hydrologic Analysis Indian Wash
• Date: 1/1/1980
• Prepared For: FEMA
• Prepared By: MSM Consultants, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

TABLES

Table 1 - Sub-basin Locations Index

Page
13

Table 2 - Unit Hydrograph Coefficients
Table 3 - Peak Sub-basin Flows

14

Table 4 - Peak Discharges for Grand Junction Flood
Insurance Study

17
18

Table 5 - Key to Other Studies

20

FIGURES

Figure 1 - Vicinity Map

3

Figure 2 - Photographs of 1958 Flood

6 & 7
7
8

Figure 3 - Drawing of Flooded Areas During 1958 Flood

Figure 4 - Photograph of SCS IW-l Structure

Figure 5 - Photograph of Indian Wash Channelization Project
9
Figure 6 - Schematic of Stream Network 11

Figure 7 - Sub-basin Locations 12

Figure 8 - Depth-Duration-Frequency curve 15

Figure 9 - Hypothetical 10-, 50-, 100- and 500-ycar 18
Storm Hyetographs

Figure 10- Discharge-Stream Stationing Rclationship 19

Figure 11- Comparison of Computcd Flows with Othcr 21
Studies in Grand Junction Area

Figure 12- Comparison of 100-Ycar Computcd Flows with All
Known Studies in the Colorado Rivcr Basin 22
of Colorado

11

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