WSP02120

• File Number: 8210.470
• Description: Pacific Southwest Interagency Committee
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 9/1/1962
• Author: S F Cramer
• Title: Phreatophyte Subcommittee - Draft of Proposed Program of the Phreatophyte Subcommittee - PSIAC
• Water Supply Pro - Doc Type: Project Overview

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Major problems under consideration.

1. Legal status of water salvaged by eradication or control of
phreatophytes.

2. Quantities of water that may be salvaged by eradication or
control of various varieties of phreatophytes under different condi-
tions of (a) climate, (b) depths to water table, and (c) quality of
ground water.

3. Evapotranspiration discharge rates u.r species of phreato-
phytes for varying conditions of climate, water table, and water
quality.

4. Economics of water salvage by eradication or control of
phreatophytes.

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etc.

5. Control methods including mechanical, chemical, biological,

Studies initiated.

1. Evaluation of the effects of submergence upon saltcedar in
Roosevelt Reservoir, Arizona.

2. Collection and evaluation of costs of various control methods.

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Studies completed.

A report on "Introduction, Spread, and Areal Extent of Saltcedar
(Tamarix spp) in 'rlestern United States," by T. W. Robinson (USGS).
To be published as a Water Supply Paper by the Geological Survey.

Publications.

"Selected Bibliography on Evaporation and Transpiration," by
T. W. Robinson and A. I. Johnson, published as Water Supply Paper
1539-4 u.r the Geological Survey, July 1961.

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"A Guide for Mapping Phreatophyte Vegetation," by J. S. Horton
(USFS), T. W. Robinson (USGS), and H. R. McDonald (USBR), authorized
for publication as one of the nwnbered series of publications of the
U. S. Department of Agriculture.

Special programs and activities.

A comprehensive symposium on "The Phreatophyte Problem" was pre-
sented to members of the parent committee at their 61-4 meeting in
Las Vegas, Nevada, 29 November 1961.

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