WSP12647 ‎(2)‎

• File Number: 8282.400
• Description: Colorado River Operations and Accounting - Deliveries to Mexico
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 6/1/1999
• Author: Environmental Defense Fund
• Title: A Delta Once More - Restoring Riparian and Wetland Habitat in the Colorado River Delta - Environmental Defense Fund - 06-01-99
• Water Supply Pro - Doc Type: Report/Study

5. R E COM MEN DATION S ................................................................................................................................... 41

Concl u sion ...... ............... ............ .... .......................... ...... ...... ........... ............ ...... ................... .................. .....................,..... 41

Recommendations .......................................................................................................................................................... 41

Manage Existing Flows for the Benefit of Delta Ecosystems .......................................................................... 42
Change Institutional Arrangements and Agreements to Support Delta Ecosystems ............................. 42
Establish Market Mechanisms and Funding Sources for Delta Preservation ............................................44

I ncrease Pub lie Pa rticipation ................. ... .... ...,.............. ...... ....... ...... .................. ....... ...... ...... ............... ........... ..... ..... 45

Cond uct Further Research ................,...............................................,..............................................."........................46

Implement Site-Specific Restoration ..........................................................................,............................................. 46

Colorado River Delta Riparian Corridor (Zones 2-4) .................................................................................. 46
Colorado River Delta Riparian Corridor and Wetland (Zone 4) .............................................................. 47
Rio Hardy Wetlands (Zones 4 a 5) .................................................................................................................... 47
La Cienega de Santa Clara/EI Doctor/Ellndio (Zone 7) ............................................................................. 47

BIB LI 0 G RAP HY .................................................................................................................................................... 49

APPENDIX A: SELECTED FLORA AND FAUNA OF THE COLORADO RIVER DELTA._......__..... A-1

APPEN D IX B: MATERIALS AN D METH 0 DS .............................................................................................. B-1

AP PEN D IX (: PU B LIC I NVO LVEM ENT ....................................................................................................... C-1

BOXES
Box 1.

Box 2.
Box 3.
Box 4.
Box 5.

TABLE
Table 1.

FIGURES
Figure 1.
Figure 2.
Figure 3.

Figure 4.
Figure 5.
Figure 6.

PHOTOS'
Photo 1.
Photo 2.
Photo 3.

Photo 4.
Photo 5.
Photo 6.
Photo 7.

A Related Issue: Wastewater Treatment for Mexicali-
A New Source of Water for the Delta? ............................................................................... 13
A Related Issue: La Cienega de Santa Clara ............................................................................ 16
Vegetation of the Colorado River Delta ................................................................................... 26
A Related Issue: The Yuma Desalting Plant ............................................................................ 31
A Related Issue: The Salton Sea .................................................................................................. 39

Characteristics of the Colorado River Delta Flood plain in Mexico. ............................... 28

The Colorado River Delta, 1933 .................................................................................................... 3
The Colorado River Delta, 1999 .................................................................................................... 5
Human Settlements Within the Highest Influence Area of -
the Colorado River Delta Wetlands ....................................................................................... 9
Water Flows at the Southern International Boundary, 1997 ............................................ 15
Satellite Image of the Colorado River Delta, July 15, 1997................................................ 19
Vegetation Zones of the Colorado River Delta ...................................................................... 22

Rio Hardy .............................................................................................................................................., 6

Palmer's saltgrass in the Colorado River delta. ........................................................................ 8
Aerial view of the Colorado River delta, near
where the Colorado meets the upper Gulf of California .............................................. 14
La Cienega de Santa Clara. ........................................................................................................... 16
Cottonwood trees and willows in the Colorado River riparian corridor ....................... 21
Dry mudflats in the Colorado River delta. ...............................................................................23

Gulls over the delta ..........................................................................................................................25