<i>Subsurface Drainage Flow Fluctuations Impact Denitrifying Bioreactor Hydraulic Conductivity</i>

2020 ◽  
Author(s):  
Gabriel M. Johnson ◽  
Richard A. Cooke ◽  
Reid D. Christianson ◽  
Laura E. Christianson
Keyword(s):  
Hydraulic Conductivity ◽  
Subsurface Drainage ◽  
Drainage Flow ◽  
Flow Fluctuations

MODELING SUBSURFACE DRAINAGE FLOW OF A TILE-DRAINED SMALL WATERSHED USING DRAINMOD

2005 ◽  
Vol 21 (5) ◽  
pp. 815-834 ◽  
Author(s):  
R. J. Sammons ◽  
R. H. Mohtar ◽  
W. J. Northcott
Keyword(s):  
Subsurface Drainage ◽  
Small Watershed ◽  
Drainage Flow

MONITORING SUBSURFACE DRAINAGE FLOW AT REMOTE LOCATIONS

2001 ◽  
Vol 17 (6) ◽  
Author(s):  
S. R. Workman ◽  
S. F. Higgins ◽  
S. A. Shearer
Keyword(s):  
Subsurface Drainage ◽  
Drainage Flow ◽  
Remote Locations

Subsurface Drainage Flow and Soil Water Dynamics of Reconstructed Prairies and Corn Rotations for Biofuel Production

2014 ◽  
Vol 13 (4) ◽  
pp. vzj2013.10.0177 ◽  
Author(s):  
Aaron L. Daigh ◽  
Xiaobo Zhou ◽  
Matthew J. Helmers ◽  
Carl H. Pederson ◽  
Robert Ewing ◽  
...  
Keyword(s):  
Soil Water ◽  
Subsurface Drainage ◽  
Water Dynamics ◽  
Biofuel Production ◽  
Soil Water Dynamics ◽  
Drainage Flow

MODIFIED SCS CURVE NUMBER METHOD FOR PREDICTING SUBSURFACE DRAINAGE FLOW

2001 ◽  
Vol 44 (6) ◽  
Author(s):  
Y. Yuan ◽  
J. K. Mitchell ◽  
M. C. Hirschi ◽  
R. A. C. Cooke
Keyword(s):  
Curve Number ◽  
Subsurface Drainage ◽  
Drainage Flow ◽  
Scs Curve Number ◽  
Curve Number Method

COMPARISON OF METHODS FOR DETERMINING SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY OF TWO SOUTHERN ALBERTA SOILS

1986 ◽  
Vol 66 (2) ◽  
pp. 249-259 ◽  
Author(s):  
G. D. BUCKLAND ◽  
D. B. HARKER ◽  
T. G. SOMMERFELDT
Keyword(s):  
Soil Moisture ◽  
Hydraulic Conductivity ◽  
Characteristic Curve ◽  
Subsurface Drainage ◽  
Saturated Hydraulic Conductivity ◽  
Drainage Design ◽  
Moisture Characteristic ◽  
Constant Head ◽  
Subsurface Drains ◽  
Drainable Porosity

Saturated hydraulic conductivity (Ks) and drainable porosity (f) determined by different methods and for different depths were compared with those determined from the performance of drainage systems installed at two locations. These comparisons were made to determine which methods are suitable for use in subsurface drainage design. Auger hole and constant-head well permeameter Ks were 140 and 110%, respectively, of Ks determined from subsurface drains. Agreement of horizontal or vertical Ks, from in situ falling-head permeameters; to other methods was satisfactory providing sample numbers were large. Ks by Tempe cells was only 3–10% of drain Ks and in one instance was significantly lower than Ks determined by all other methods. At one site a profile-averaged value of f determined from the soil moisture characteristic curve (0–5 kPa) of semidisturbed cores agreed with that determined from drainage trials. At the other site, a satisfactory value of f was found only when the zone in which the water table fluctuated was considered. Results indicate that Ks determined by the auger hole and constant-head well permeameter methods, and f determined from the soil moisture characteristic curve of semidisturbed cores, are sufficiently reliable and practical for subsurface drainage design. Key words: Subsurface drainage, hydraulic conductivity, drainable porosity

scholarly journals Reclamation Efficiency of Subsurface Drainage in Zardab Zone of Strip Kura Region of Shirvan Steppe

2020 ◽  
Vol 6 (4) ◽  
pp. 181-191
Author(s):  
D. Talibova
Keyword(s):  
Water Supply ◽  
Land Reclamation ◽  
Subsurface Drainage ◽  
Hydrochemical Parameters ◽  
Drainage Flow ◽  
Groundwater Rise

Article is devoted to the analysis of land reclamation, drainage and desalination action of closed tubular drainage. Parameters: depth — 3 m, distance between the strips — 200 m. The system was built according to the project “Improvement of the reclamation state of the lands of the Zardab zone of strip Kura region of Shirvan steppe”. The data on water supply, drainage flow, drainage module during the flushing period, a change in the level of groundwater (rise-fall), the desalting effect of the flushing process on the degree of salinity of drainage and groundwater, as well as hydrochemical parameters of soil are presented.

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