Measuring seepage loss in irrigation canals : (tentative procedures for ponding and seepage meter tests) /

Mode of access: Internet.

Lining irrigation laterals and farm ditches /

Cover title.

Canal safety : safety in the operation of canals and other waterway structures.

Mode of access: Internet.

Linings for irrigation canals, with emphasis on lower-cost methods for seepage control.

Mode of access: Internet.

Irrigation canals in a semi-arid agricultural landscape surrounded by wetlands: Their role as a habitat for birds during the breeding season

Traditional water supply systems in semi-arid agrarian ecosystems, mainly irrigation canals, contribute to the diversity of the landscape and influence the composition of species. To evaluate their effect on bird communities in the breeding season, we selected a rural area in southeastern Spain, where an intricate and extensive network of irrigation canals and cultivated areas is located between two wetlands declared as Natural Parks. Birds were counted at representative points distributed throughout the canal network at which we recorded several variables related to the physical features, the vertical and horizontal structure of associated vegetation, reed development (Phragmites australis) and land use in the neighboring areas. We detected 37 bird species, most of which were also breeding in the wetlands nearby. We used Hierarchical Partitioning analyses to identify the variables most strongly related to the probability of the presence of selected species and species richness. Vegetation cover and height close to the canals, together with reed development, were the most important types of variables explaining species presence and richness. We found that current management practices for reeds in canals are not well-suited for biodiversity conservation. We therefore propose alternatives that could be implemented in the area in cooperation with stakeholders.

General geology, classification, and use of clays, and use of bentonite as a lower-cost canal lining material /

Mode of access: Internet.

Lower-cost canal lining program : unreinforced and reinforced cast-in-place concrete pipe.

Mode of access: Internet.

Measuring seepage from irrigation channels /

Cover title.

Patrimonis fràgils: sèquies i recs

El petit però ric patrimoni hidràulic (preses, rescloses, sèquies, recs...) del país testimonia l’intens aprofitament que han tingut els nostres rius al llarg de la història. Però aquest patrimoni encara no gaudeix del reconeixement i la valoració que comencen a tenir els grans edificis o conjunts del patrimoni industrial vinculat a l’aigua

[Ressenya del llibre, Los regadíos históricos españoles: paisajes culturales, paisajes sostenibles, de Jorge Hermosilla (dir.)]

Ressenya de l'obra dirigida per Jorge Hermosilla i titulada "Los regadíos históricos españoles: paisajes culturales, paisajes sostenibles", publicada l'any 2010. Es trata d'un estudi realitzat per la Direcció General de l’Aigua, del Ministeri de Medi Ambient sobre els recs històrics espanyols des d’una perspectiva cultural. L’obra s’estructura en dues parts: la primera és una aproximació històrica dels conreus de regadiu espanyols i a la segona s'analitzen amb més detall una selecció de sistemes de rec històrics

Arizona Canal Diversion Channel : selection of roughness coefficients for designing the concrete-lined channel /

"September 1985."

Drawdown tests on earth cover material placed over an asphalt membrane, East Bench Canal, Missouri River Basin Project, Montana /

Mode of access: Internet.

Specifications for asphaltic membrane canal lining.

Mode of access: Internet.

Summary report on canal linings : with emphasis on lower-cost methods for seepage control /

Mode of access: Internet.

A review of the use of chemical sealants for reduction of canal seepage losses, lower-cost canal lining program /

Mode of access: Internet.