Filters: Tags: sediment yield (X)
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Sediment yield from small arid basins, particularly in the Mojave Desert, is largely unknown owing to the ephemeral nature of these fluvial systems and long recurrence interval of flow events. We examined 27 reservoirs in the northern and eastern Mojave Desert that trapped sediment from small (< 1 km2) drainage basins on alluvial fans over the past 100 yr, calculated annual sediment yield, and estimated the average recurrence interval (RI) of sediment-depositing flow events. These reservoirs formed where railbeds crossed and blocked channels, causing sediment to be trapped and stored upslope. Deposits are temporally constrained by the date of railway construction (1906–1910), the presence of 137Cs in the reservoir...
Categories: Publication;
Types: Citation;
Tags: Cesium 137,
Desert geomorphology,
Runoff frequency,
Sediment yield
An accounting procedure is developed which determines a flow regime that is capable of transporting an amount of bedload sediment necessary to ensure channel stability downstream. The method allows for sediment buildup in the channel within geomorphic threshold limits during low flow periods. During periods of high runoff, enough water is bypassed to transport the stored sediment. The procedure utilizes only those flows of sufficient magnitude to maintain channel stability over the long run (25–50+ years). An example is presented which determines the volume of water and frequency of release for channel maintenance purposes downstream from a hypothetical water diversion project. Of some 1,200,000 acre feet generated...
Categories: Publication;
Types: Citation;
Tags: AGNPS,
Canada, Quebec,
SW 0810 General,
Water Resources Abstracts,
flood peak,
Categories: Publication;
Types: Citation;
Tags: Aquatic plants,
Atrazine,
Catchment areas,
Erosion Control,
Filters,
Categories: Publication;
Types: Citation;
Tags: Accretion,
Agricultural runoff,
Agriculture,
Caesium isotopes,
Cesium Radioisotopes,
Categories: Publication;
Types: Citation;
Tags: Agricultural Watersheds,
Calibrations,
Clays,
Infiltration,
Model Studies,
Categories: Publication;
Types: Citation;
Tags: SW 0870 Erosion and sedimentation,
WEPP,
Water Resources Abstracts,
comparison studies,
hydrology,
Categories: Publication;
Types: Citation;
Tags: Catchment Basins,
Catchment area,
Erosion,
Erosion Rates,
Field Tests,
Categories: Publication;
Types: Citation;
Tags: Geographic Information Systems,
Land Use,
Rainfall,
Rill Erosion,
Runoff,
Categories: Publication;
Types: Citation;
Tags: Alluvial Rivers,
Alluvial deposits,
British Isles,
Channel Morphology,
Channel flow,
Categories: Publication;
Types: Citation;
Tags: Agricultural Watersheds,
Agricultural runoff,
China, People's Rep.,
China, People's Rep.,
Erosion control,
Categories: Publication;
Types: Citation;
Tags: AGNPS,
Catchment areas,
Model Studies,
Nonpoint Pollution Sources,
Nonpoint pollution,
Categories: Publication;
Types: Citation;
Tags: Australia, Tasmania,
Australia, Tasmania,
Erosion,
Fires,
Forest Fires,
Categories: Publication;
Types: Citation;
Tags: Data Collections,
Data Interpretation,
Erosion,
Estimating Equations,
Hydrology,
These data were used to examine how post-fire sedimentation might change in western USA watersheds with future fire from the decade of 2001-10 through 2041-50. The data include previously published projections (Hawbaker and Zhu, 2012a, b) of areas burned by future wildfires for several climate change scenarios and general circulation models (GCMs) that we summarized for 471 watersheds of the western USA. The data also include previously published predictions (Miller et al., 2011) of first year post-fire hillslope soil erosion from GeoWEPP that we summarized for 471 watersheds of the western USA. We synthesized these summarized data in order to project sediment yield from future fires for 471 watersheds through the...
Categories: Data;
Types: Citation;
Tags: A1B emission scenario,
A2 emission scenario,
Annual Post-fire Sediment Yield,
Arizona,
Average Burned Area,
Categories: Publication;
Types: Citation;
Tags: Asia, Himalaya Mts.,
SW 0860 Water and plants,
USA, Great Plains,
USA, Rocky Mts.,
Water Resources Abstracts,
Categories: Publication;
Types: Citation;
Tags: Detritus,
Erosion,
France, Franche-Comte, Doubs R.,
France, Franche-Comte, Doubs River Valley,
France, Jura,
Categories: Publication;
Types: Citation;
Tags: AGNPS,
Canada, Quebec,
Canada, Quebec,
Hydrology,
Land Use,
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