نتایج جستجو برای: drainage canals

تعداد نتایج: 50391  

2007
ANDREW J. CARLSON FRANK J. RAHEL

—Entrainment in irrigation canals has been considered a major source of mortality for some fish populations. However, the magnitude of fish loss from entrainment is usually not evaluated from a basinwide perspective, thus precluding an assessment of populationlevel consequences. We incorporated such a perspective in evaluating entrainment losses of Bonneville cutthroat trout Oncorhynchus clarki...

2008
JAMES J. ROBERTS FRANK J. RAHEL

—Irrigation canals can be a major source of mortality for fish in the Rocky Mountain region. Our study looked at how fish were affected by the irrigation canal system in the Smiths Fork, a tributary to the Bear River in western Wyoming. There are two native species of conservation concern in the Smiths Fork drainage: Bonneville cutthroat trout Oncorhynchus clarkii utah and northern leatherside ...

Journal: :Frontiers in Marine Science 2022

Biscayne Bay is an urban bay in Southeast Florida, but the southern region of dominated by mangroves. Mangrove wetlands provide important habitat for fish, some regions are altered drainage canals Bay. This study utilized a large public dataset to determine if fish formed distinct species assemblages throughout examining surveyed at 12 different sites over 5 years. Six were front intact mangrov...

Journal: :Water 2021

The sedimentation of drainage canals is a common process and its intensity depends on several geographical hydrological factors. Drainage canal sediments are frequently polluted by heavy metals or other pollutants; they need to be periodically dredged ultimately, have safely disposed of. Furthermore, pollution in smaller drainages may go undetected because under the Water Framework Directive (D...

Journal: :Agricultural sciences 2022

Burkina Faso is an agricultural and landlocked country whose agriculture dependent on climatic hazards. Irrigated therefore appears as alternative to secure, intensify sustainably increase production. However, irrigation systems in suffer from numerous technical, organizational, land structural problems, which strongly undermine their performance. This the case of irrigated perimeter Karfiguéla...

Journal: :Jurnal Presipitasi: Merdia Komunikasi dan Pengembangan Teknik Lingkungan 2022

The drainage system in the Kedungmundu Road area has several channels that can no longer accommodate rainwater discharge, resulting runoff of channel, which causes flooding and puddles Area. Drainage problems such as silting due to garbage, soil sedimentation, insufficient channel dimensions. In hydrological analysis, rainfall intensity is 129,586 mm/hour. As hydraulic normalised by dredging se...

Journal: :Frontière·s 2022

In Pharaonic Egypt, efforts were made to drain used water in settlements and cities since the earliest times. houses of elite as well palaces pharaohs, however, there not only separate bathrooms, but even toilets; both are attested c. 2700 BC for first time, while such facilities represented lower class. Therefore, majority Egyptians cleaned themselves Nile, canals ponds. There no public baths ...

Journal: :Fluids 2022

Many reclaimed areas in Indonesia have abandoned swampland or idle land which is attributed to various factors. One of the main factors unsuitability exiting flow system this area since condition canals and water structures has not been rehabilitated for a long time. No study carried out investigate suitable model simulating appropriate criteria assessment erosion within channel on Tidal lowlan...

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