( QVD )

WR, M.-,,- "iJEPARTMENT OF THE INTERIOR

UNITED STATES GEOLOGICAL SURVEY

R. 22 E. 110°00 1 R. 23 E.

T. 1 5

N.

34°30 1

R. 24 E.

I

R. 25 E.

•

o I

PREPARED IN COOPERATlDN WITH THE ARlZDNA WATER COMMlSSIDN

'Y , R. 26 E. R. 27 E.

~ \ Zion Reservoir

'"" ,Ved 51orm.on

Lake

34° J 5 I

] lQ0 QQ I

• -1.§_§_ 7865 300

0 ..liQ..

585

......-e 5720 1200

BASE FROM U.S. GEOLOGICAL SURVEY ST. JOHNS 1:250,000, 1954, CLIFTON 1:250,000, [954, AND HOLBROOK J:250,000, 1954

E X P L A N A T I O N

EXTENT OF GROUND-IIATER DEVELOPMENT IN THE TRIASSIC, CRETACEOUS, AND TERTlARY ROCKS

WELL IN WH[CH DEPTH TO WATER WAS MEASURED IN 1974-75-Upper number, 156, is depth to water in feet below land surface {U. unable to measure the depth to water at time of field inspection; FL, flowing; R, depth to water reported); mi ddle number, 7865, is altitude of the water level in feet above me·an sea level; lower number, 300, is specific conductance in micromhos per centimetre at 25°C

WELL IN WHICH DEPTH TO WATER WAS MEASURED PRIOR TO 1974-Used where 1974-75 data are not available and changes in water level are negligible. Upper number , 140, is depth to water in feet below land surface (U, unable to measure the depth to water at time of field inspection; R, depth to water reported); middle number, 6890, is altitude of the water level in feet above mean sea level; lower number, 585 , is specific conductance in micromhos per centimetre at 25°C

SPRlNG FOR WHICH DATA WERE COLLECTED IN 1974-75-Upper number, 5720, is altitude of land surface in feet above mean sea level; lower number, 1200, is specific conductance in micromhos per centimetre at 25°C

DS = 290

CHEMlCAL-QUALITY PATTERN DIAGRAM-Shows major chemical constituents in milliequivalents per litre. The pattern is in a variety of shapes and sizes, which provides a means of comparing, correlating, and characterizing similar or dissimilar types of water. The pattern tends to maintain its characteristic shape as the sample becomes dilute or concentrated, and the pattern size varies somewhat in proportion to the variation in dissolved solids

Milliequivalents per l itre

Cations Anions

Sod i um 2r0---,10,--,,0,.--=,10'--=,2 O Ch 1 or i de

Calcium Bicarbonate

Magnesium Sulfate

DISSOL VED SOLIDS-Number, 290, is amount of dissolved solids in milligrams per litre

ARBITRARY BOUNDARY OF GROUND-WATER AREA

34°00 1

5 0 5MiLES Ee================== 5 0 5 10 KILOMETRES '=='===S=i:::====::::E======='========3 WITH

CONTOUR INTERVAL 200 FEET SUPPLEMENTARY CONTOURS AT JOO-FOOT

DATUM IS MEAN SEA LEVEL INTERVALS 109°30 1

GROUND-WATER CONDITIONS IN THE TRIASSIC, CRETACEOUS, AND TERTIARY ROCKS

MAPS SHOWING GROUND-WATER CONDITIONS IN THE CONCHO, ST . JOHN S, AND WHITE MOUNTA[NS AREAS, APACHE AND NAVAJO COUNTIES, ARIZONA-1975

By

R. W. Harper and T. W. Anderson

R. 28 E. R. 29 E. 1090151 R. 30 E.

109°15 1

WATER-RESOURCES INVESTIGATIONS 76-104 OPEN-FILE REPORT (SHEET 2 OF 4)

R. 31 E.

T. 1 3 N.

34'30'

T. 12

N.

11

N.

T. 1 0

N.

34°15 1

T. 9 N.

T.

8 N.

fL.c,,,,L., . .!-.. ,7_ •. , ..,c,-?:L.!.! .. ~ .. 3 4' 00 '

T. 7 N.

T. 6 N.