Main Title |
Measurement and Analysis of Unsaturated Flow and Groundwater Surface Profiles Related to Recharge and Withdrawals. |
Author |
Evan, D. D. ;
Matloc, W. G. ;
Qash, H. K. ;
Sumne, J. S. ;
Warric, A. W. ;
|
CORP Author |
Arizona Univ., Tucson. |
Year Published |
1971 |
Report Number |
DI-14-31-0001-3203; OWRR-A-017-ARIZ; 01781,; A-017-ARIZ(1) |
Stock Number |
PB-204 708 |
Additional Subjects |
( Ground water ;
Mathematical models) ;
( Ground water recharge ;
Arizona) ;
Fluid flow ;
Water wells ;
Water supply ;
Hydrogeology ;
Streams ;
Volume ;
Correlation techniques ;
Aquifers ;
Porosity ;
Computer programs ;
Permeability ;
Water storage ;
Water table ;
Rillito Creek ;
Unsaturated flow ;
Tucson(Arizona) ;
Ephemeral streams
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-204 708 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
30p |
Abstract |
The relationship between time of flow in Rillito Creek, an ephemeral stream near Tucson, Arizona, and water levels in nearby wells was defined and a mathematical model of the underlying aquifer was formulated. A digital computer program was used to determine model parameter values which most closely duplicated measured groundwater surface profiles. Values obtained were: effective channel width, 150 feet; permeability, 0.0022 feet per sencond; porosity, 0.20; and infiltration, 3.8 feet per day. Computer water levels agreed closely with measured values for another recharge period. Field results show that the displacement of chloride applied in irrigation water can be quantitatively predicted by linking the equations of solute and water movement through an unsaturated soil. Geophysical methods were examined for determining groundwater volumes in alluvial basins and coefficients of storage. Correlation of gravity changes with coefficient of storage indicates that the gravity method may be used for aquifers which have high coefficients of storage and in which the water table rises or declines 20 feet or more. (Author) |
NTIS Title Notes |
Project completion rept. 1 Jul 69-Jun 71. |
PUB Date Free Form |
Aug 71, |
Category Codes |
8H; 64H |
NTIS Prices |
PC A03/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326523356 |
Origin |
NTIS |
Type |
CAT |