Water-Resources Investigations Report 01-4239
Ground-Water Discharge Determined from Measurements of Evapotranspiration, Other Available Hydrologic Components, and Shallow Water-Level Changes, Oasis Valley, Nye County, Nevada
Table 12. Summary of annual changes in water levels measured in shallow wells, Oasis Valley discharge area, Nevada, 1997-2000
[Sites grouped by ET unit (table 1). Depths referenced to land-surface datum. Negative depth implies water level above datum. Abbreviations: min, annual minimum for ET unit over duration of study; max, annual maximum for ET unit over duration of study. Symbol: --, missing or non-applicable data.]
Well name: Identifies well location (table 11).
Depth-to-water measurement: Minimum and maximum are first occurrence of measured value during year. Measurements affected by local precipitation, short-term flooding, or long-term rise in water level are given in table but are not used in determining the annual minimum, maximum, or fluctuation. All wells measured by USGS.
|
Well name |
Well depth (feet) |
Year1 |
Depth-to-water measurement |
Comments |
||||
|
Annual minimum |
Annual maximum |
Annual fluctuation (feet) |
||||||
|
Feet |
Month/Day |
Feet |
Month/Day |
|||||
|
Dense Meadow and Woodland Vegetation (DMV) |
||||||||
|
Springdale ET Deep Well |
9.0 |
1997 |
-1.9 |
04/10 |
0.7 |
09/16 |
2.6 |
An upward vertical hydraulic gradient at the Springdale site exists year-round and as such is not caused by ET. The gradient is indicative of either a local or regional ground-water discharge area. |
|
1998 |
-2.52 |
02/24 |
-- |
-- |
-- |
|||
|
|
min2.2 |
03/09 |
min.3 |
08/21 |
min2.5 |
|||
|
1999 |
-2. |
04/15 |
.5 |
09/15 |
min2.5 |
|||
|
2000 |
-2.22 |
03/13 |
-- |
-- |
-- |
|||
|
|
-1.8 |
05/01 |
.8 |
09/25 |
2.6 |
|||
|
Springdale ET Shallow Well |
5.6 |
1997 |
-.22 |
12/06 |
-- |
-- |
-- |
|
|
|
-.1 |
01/18 |
2.8 |
08/27 |
2.9 |
|||
|
1998 |
-.52 |
02/23 |
-- |
-- |
-- |
|||
|
|
-.2 |
04/06 |
2.6 |
08/29 |
2.8 |
|||
|
1999 |
-.2 |
02/01 |
2.6 |
09/15 |
2.8 |
|||
|
2000 |
-.32 |
03/13 |
-- |
-- |
-- |
|||
|
|
<-.3 |
04/06 |
2.8 |
09/25 |
3.1 |
|||
|
Ute Spring Drainage Well |
10.5 |
1998 |
-0.11 |
04/13 |
-- |
-- |
-- |
Minimum depth-to-water measurements may be affected by recharge from intermittent flow in local drainage channel. |
|
|
0 |
02/19 |
5.4 |
09/14 |
5.4 |
|||
|
1999 |
max.2 |
03/10 |
5.1 |
09/15 |
4.9 |
|||
|
2000 |
.12 |
03/13 |
-- |
-- |
-- |
|||
|
|
max.2 |
02/03 |
max5.9 |
08/01 |
max5.7 |
|||
|
Dense Grassland Vegetation (DGV) |
||||||||
|
Springdale Lower Well |
11.3 |
1997 |
-.1 |
02/27 |
7.1 |
09/25 |
7.2 |
Minimum depth-to-water measurements may be affected by recharge from intermittent flow in the Amargosa River channel. |
|
1998 |
-.1 |
02/19 |
5.6 |
09/14 |
5.7 |
|||
|
1999 |
0 |
02/01 |
6.5 |
09/15 |
6.5 |
|||
|
2000 |
0 |
02/03 |
max7.7 |
09/25 |
max7.7 |
|||
|
Pioneer Road Seep Well |
6.7 |
1998 |
min-.3 |
02/19 |
min2.1 |
08/11 |
2.4 |
Water-table fluctuation and local vegetation may be controlled by recharge from nearby intermittent spring. Vegetation is a combination of dense grassland and dense meadow vegetation. |
|
1999 |
max.4 |
04/15 |
2.3 |
07/08 |
min1.9 |
|||
|
2000 |
.32 |
03/13 |
-- |
-- |
-- |
|||
|
|
.3 |
02/03 |
2.5 |
08/01 |
2.2 |
|||
|
Sparse to Moderately Dense Grassland Vegetation (SGV) |
||||||||
|
Boiling Pot Road Well |
12.2 |
1998 |
min.4 |
02/19 |
min3.0 |
08/11 |
2.6 |
Minimum depth-to-water measurements may be affected by recharge from intermittent flow in the Amargosa river channel. |
|
1999 |
.6 |
02/01 |
3.2 |
09/15 |
2.6 |
|||
|
2000 |
.52 |
03/13 |
-- |
|
|
|||
|
|
.8 |
04/06 |
3.2 |
08/01 |
min2.4 |
|||
|
OVM ET Well |
13.2 |
1998 |
0.22 |
02/18 |
-- |
-- |
-- |
Minimum depth-to-water measurements may be affected by recharge from intermittent flow in local drainage channel. |
|
|
.7 |
02/02 |
4.1 |
08/31 |
3.4 |
|||
|
1999 |
.32 |
04/07 |
-- |
-- |
-- |
|||
|
|
.5 |
01/29 |
4.4 |
09/17 |
max3.9 |
|||
|
2000 |
.62 |
03/13 |
-- |
-- |
-- |
|||
|
|
max2.0 |
04/06 |
4.4 |
09/05 |
min2.4 |
|||
|
OVU-Middle ET Well |
11.1 |
1999 |
.12 |
04/07 |
-- |
-- |
-- |
|
|
|
1.0 |
03/16 |
4.6 |
09/15 |
3.6 |
|||
|
2000 |
02 |
02/10 |
-- |
-- |
-- |
|||
|
|
1.0 |
02/21 |
max4.8 |
08/25 |
3.8 |
|||
|
Sparse to Moderately Dense Shrubland Vegetation (SSV) |
||||||||
|
OVU-Dune Well |
16.9 |
19983 |
6.0 |
05/13 |
7.2 |
08/30 |
1.2 |
|
|
1999 |
6.42 |
04/29 |
-- |
H |
-- |
|||
|
|
max6.4 |
05/03 |
7.2 |
09/15 |
min.8 |
|||
|
2000 |
6.22 |
04/17 |
-- |
-- |
-- |
|||
|
|
6.3 |
04/21 |
max7.6 |
08/27 |
1.4 |
|||
|
OVU-Lower ET Well |
10.8 |
1999 |
3.2 |
05/02 |
min.0 |
09/17 |
2.8 |
Water-table fluctuation may be affected by nearby sparse grassland vegetation. |
|
2000 |
min2.7 |
03/12 |
6.3 |
08/29 |
max3.6 |
|||
1 Calendar year 2000 measurements ended in September 2000.
2 Minimum depth-to-water measurement is affected by local precipitation or flooding.
3 Annual statistics based on a partial year of record but assumed to cover annual
fluctuation.