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Investigation of seepage reduction by soil-water chemical reactions in irrigation canals Item Info

A procedure for estimating potential changes in the hydraulic conductivity of a silt layer in a canal was developed following McNeal's method for predicting the hydraulic conductivity of soils in the presence of mixed-salt solutions. The reason for using this method was to analyze the effect on seepage from the canal. A series of experiments on soil columns was conducted in order to determine the surface sealing effect by fine sediments and metabolic products of micro-organisms activity. Similar tests were conducted using sterile soil and water. A comparison of predicted and measured conductivities was made. Physical dispersion is perhaps the primary factor in causing changes in seepage rate with time. For the case studied, the reduction in conductivity that could be attributed to soil-water chemical reaction is minor in magnitude as is also the effect of microbial action. Silting effect due to settlement of soil particles carried in canal water appears to have only a minor effect on conductivity change also.

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Title:
Investigation of seepage reduction by soil-water chemical reactions in irrigation canals
Authors:
Hernandez, Pedro A.
Date Created (ISO Standard):
1972-05
Description:
A procedure for estimating potential changes in the hydraulic conductivity of a silt layer in a canal was developed following McNeal's method for predicting the hydraulic conductivity of soils in the presence of mixed-salt solutions. The reason for using this method was to analyze the effect on seepage from the canal. A series of experiments on soil columns was conducted in order to determine the surface sealing effect by fine sediments and metabolic products of micro-organisms activity. Similar tests were conducted using sterile soil and water. A comparison of predicted and measured conductivities was made. Physical dispersion is perhaps the primary factor in causing changes in seepage rate with time. For the case studied, the reduction in conductivity that could be attributed to soil-water chemical reaction is minor in magnitude as is also the effect of microbial action. Silting effect due to settlement of soil particles carried in canal water appears to have only a minor effect on conductivity change also.
Subjects:
hydraulic conductivity silt canal seepage
Location:
Paul
Latitude:
42.61
Longitude:
-113.78
Series:
Water for Idaho
IWRRI number:
197211
Rights:
In copyright, educational use permitted. Educational use includes non-commercial reproduction of text and images in materials for teaching and research purposes. For other contexts beyond fair use, including digital reproduction, please contact the University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu. The University of Idaho Library is not liable for any violations of the law by users.
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Source
Preferred Citation:
"Investigation of seepage reduction by soil-water chemical reactions in irrigation canals", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-197211.html
Rights
Rights:
In copyright, educational use permitted. Educational use includes non-commercial reproduction of text and images in materials for teaching and research purposes. For other contexts beyond fair use, including digital reproduction, please contact the University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu. The University of Idaho Library is not liable for any violations of the law by users.
Standardized Rights:
http://rightsstatements.org/vocab/InC-EDU/1.0/
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