Main Title |
Investigation of Natural Sealing Effects in Irrigation Canals. |
Author |
Brockwa, Charles E. ;
|
CORP Author |
Idaho Univ., Moscow. Water Resources Research Inst. |
Year Published |
1973 |
Report Number |
DI-14-01-001-3212; OWRR-A-023-IDA; 10404,; A-023-IDA(1) |
Stock Number |
PB-221 010 |
Additional Subjects |
( Irrigation canals ;
Sealing) ;
( Reservoirs ;
Sealing) ;
( Irrigation ;
Water loss) ;
Seepage ;
Hydraulic conductivity ;
Fluid infiltration ;
Sediments ;
Clays ;
Silts ;
Soil water ;
Chemical reactions ;
Field tests ;
Soil chemistry ;
Benthos ;
Seasonal variations ;
Aquatic biology ;
Water distribution ;
Microbiology ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-221 010 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
42p |
Abstract |
Results of a three year study on the factors contributing to natural sealing of irrigation canals and reservoirs are presented. Laboratory evaluations of the effect of sedimentation, microbiological activity and soil-water chemical reactions on the hydraulic conductivity of soils were performed. Particular emphasis was on the Portneuf silt-loam soil of southern Idaho. Techniques for determining and predicting the sediment entrapment in soils from hydraulic conductivity measurements in laboratory columns are presented. Application of a method utilizing soil clay content, exchangeable sodium percentage, and total salt concentration of irrigation water to predict hydraulic conductivity is evaluated. The effect of microbiological activity in the benthic area of canals and reservoirs on seepage rates is discussed. Field tests in an operating canal to monitor soil moistur tension, soil moisture and seepage rates during an irrigation season are outlined. (Modified author abstract) |
Highlights Notes |
Objectives were to identify the factors in effective sealing of canals and reservoirs, evaluates the effect on soils, and derives guidelines for estimating the sealing effect and seepage losses. |
NTIS Title Notes |
Research completion rept.. |
PUB Date Free Form |
Jun 73, |
Category Codes |
2C; 11A; 52C; 71B# |
NTIS Prices |
PC A03/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326562973 |
Origin |
NTIS |
Type |
CAT |