Maps Showing Depth to Water Table, September 1976, and Area Inundated by the June 1975 Flood, Helena Valley, Lewis and Clark County, Montana

1978 ◽  
Author(s):  
Kathleen R. Wilke ◽  
M.V. Johnson
Keyword(s):  
Water Table ◽  
Clark County ◽  
Depth To Water Table ◽  
Lewis And Clark

THE EFFECT OF GROUNDWATER ON SOIL FORMATION IN A MORAINAL LANDSCAPE IN SASKATCHEWAN

1985 ◽  
Vol 65 (2) ◽  
pp. 293-307 ◽  
Author(s):  
J. J. MILLER ◽  
D. F. ACTON ◽  
R. J. ST. ARNAUD
Keyword(s):  
Groundwater Flow ◽  
Water Table ◽  
Soil Formation ◽  
Lateral Flow ◽  
Dominant Factor ◽  
Slope Position ◽  
Soluble Salts ◽  
Runoff Water ◽  
Depth To Water Table ◽  
Water Tables

The results of this study indicate the importance of groundwater flow and water table depth on the genesis, characteristics and distribution of soils within a hummocky morainal landscape. Non-saline and non-carbonated soils in upland depressions can be attributed to "depression-focused" recharge by snowmelt and snowmelt runoff in the spring, as evidenced by deep sola and/or eluvial horizons. Non-saline and carbonated soils on lower slopes adjacent to depressions are associated with local discharge and/or lateral flow from the adjacent groundwater mounds under the depressions in spring, as well as upward flow in the summer resulting from water use by phreatophytes such as willows, creating a water table depression around the slough fringes. Saline and carbonated soils at low elevations are associated with shallow and rather stable water tables, and local discharge from surrounding uplands. Soil types on uplands are more dependent on slope position and infiltration than on depth to water table or groundwater flow. Non-saline soils of different profile types occur on mid- and upper slope positions. These areas have a deep water table with mainly recharge or lateral flow occurring in the saturated zone. The infiltration of surface runoff water in upland depressions is the dominant factor influencing the distribution of soluble salts in this hummocky landscape. Key words: Water table, landscape position, recharge, discharge, soluble salts, soil genesis, morphology, carbonate soil

Alfalfa Growth and Soil Oxygen Diffusion as Influenced by Depth to Water Table

1984 ◽  
Vol 48 (5) ◽  
pp. 1165-1169 ◽  
Author(s):  
J. Bornstein ◽  
G. R. Benoit ◽  
F. R. Scott ◽  
P. R. Hepler ◽  
W. E. Hedstrom
Keyword(s):  
Water Table ◽  
Oxygen Diffusion ◽  
Soil Oxygen ◽  
Depth To Water Table

scholarly journals Dimensional Analysis of Transmissivity Equations and Comparison of Dependent Variables Using Birnin Gwari Aquifer Characteristics in Northern Nigeria

2020 ◽  
pp. 41-50
Author(s):  
Isaac O. Olaniyan
Keyword(s):  
Hydraulic Conductivity ◽  
Correlation Analysis ◽  
Dimensional Analysis ◽  
Water Table ◽  
Specific Capacity ◽  
Correlation Coefficients ◽  
Depth To Water Table ◽  
Dependent Variables ◽  
Level Versus ◽  
Aquifer Characteristics

This study established relationship among three transmissivity equations using dimensional analysis, comparing three dependent variables inherent in the transmissivity equations, and use correlation analysis to examine the nature of interrelationship between drawdown and specific capacity in the Birnin-Gwari local government area of Kaduna State, Nigeria between October 2018 and October 2019. Relationship between three transmissivity equations, namely, Jacob, Logan and Babuskin was determined using dimensional analysis. The equations and the outcome were applied to the hydraulic data obtained from 26 producing boreholes in the study area. Comparison of the dependent variables, namely discharge, drawdown and hydraulic conductivity, was carried out to observe the relationship among them. The Correlation analysis was used to examine the nature of interrelationship between drawdown and specific capacity, while the plots of depth-to-water table and depth-to-basement were made to provide pictorial comparison between positions of water table and the underlying Basement. The results showed that the values computed from the Jacob method are the lowest among the three, while Logan method gave higher values, although they all trend in similar manner. The study revealed an inverse trend in the drawdown versus discharge and hydraulic conductivity. Correlation analysis between drawdown and specific capacity gave a regression coefficient of -0.593 and correlation coefficient of 0.352, indicating a weak relationship between them. The graphical relation of water level versus basement rock surfaces portend a near-parallel trend possibly determined by the underlying geology. Transmissivity values computed from the Babuskin method gave almost average values among the three methods. Both the regression and correlation coefficients gave low to average values between drawdown and specific capacity. The depth-to-basement versus depth-to-water plots showed that water table variations are probably controlled by the type and trend of basement topography.

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