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Showing 1 to 14 of 14 for “"Rainfall Simulations"”.
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A comparison of runoff quantity and quality among three cattle stocking treatments
… at the Virginia Tech Prices Fork Research Farm. Rainfall simulations were performed over replicated plots in each treatment to induce runoff for collection of runoff quantity and quality data during the 2012 grazing season. Additionally, rainfall simulations were performed prior to applying the …
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Evaluating Five Years of Soil Hydrologic Response Following the 2009 Lockheed Fire in the Coastal Santa Cruz Mountains of California
… and soil water repellency were evaluated with rainfall simulations, Mini-disk Infiltrometer (MDI) and water drop penetration time tests (WDPT) at sites represented by variations in burn severity, soils, and vegetation types throughout the Scotts Creek watershed each year for 5 years following …
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Post-fire Response of Little Creek Watershed: Evaluation of Change in Sediment Production and Suspended Sediment Transport
… was documented. High intensity, short duration rainfall (up to 87 mm/hr for 10 minute duration) initiated extensive rilling and minor channel-derived debris torrents originating from the upper south facing slopes. Rainfall simulations, hillslope erosion plots, and soil infiltration tests …
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Urban Landscape Management Practices as Tools for Stormwater Mitigation by Trees and Soils
… year after transplant. In a second experiment, rainfall simulations were used to evaluate common landscape mulch materials for their ability to prevent compaction from traffic as well their affect on surface runoff before and after traffic. When plots were subjected to heavy rainfall, (>97 mm/h) …
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Particle labeling for sediment source tracking on hillslopes
… based LIDAR, on slope surfaces under simulated rainfall. Laboratory rainfall simulations were conducted sequentially on 24 hr intervals to measure the cumulative effects of rainfall erosivity. Two bare soil plots, plot 1 and plot 2, measuring 3.6 m in length and 0.75 m in width were divided into …
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Estimating Sediment Losses Generated from Highway Cut and Fill Slopes in the Lake Tahoe Basin
… Therefore, understanding the erosion mechanisms (rainfall-runoff and dry ravel), the magnitude of erosion rates and the particle-size distribution (PSD) of the eroded material from these highly disturbed slopes, as well as quantifying the load reductions achieved through slope stabilization …
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The effects of selected corn-soybean tillage systems on rill cross-sectional geometry and soil erosion for two Illinois soils
… the experimental phase of this study, simulated rainfall and additional run-on water were applied to plots that had been subjected to alternative corn-soybean tillage treatments in two soils in central Illinois. Before and after rainfall simulations, a pin type rill meter was used to record soil …
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Effectiveness, cost, and implications of forest haul road stream crossing structures and best management practices in Virginia
… and one improved ford. During construction, rainfall simulation was utilized to estimate the sediment contribution of each crossing with minimal BMPs (BMP-), BMPs equal to state recommendations (BMP), and BMPs beyond state recommendations (BMP+). Construction costs were recorded to quantify …
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Phosphorus Losses from Simulated Dairy Mangement Intensive Grazing Forage System
… (high) were applied to plots during grazing simulations. Six rainfall simulations were conducted over the season simulating grazing conditions when forage was removed and re-growth conditions when forage had reached its target re-growth height before re-grazing occurred. Thirty minutes of …
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SOIL PHOSPHORUS AND NITROGEN EXPORT AND RETENTION IN RAINFALL RUN-OFF FROM MANURED LANDSCAPES
Rainfall run-off from manured agricultural fields can be high in nitrogen (N) and phosphorus (P) due to excess nutrient application that is unused by crops. This can pose the risk of eutrophication of nearby surface water bodies receiving run-off. The objective of this study was to determine the …
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The Effects of Forest Fires on Runoff Rates: The Role of Duff Removal and Surface Sealing by Vegetative Ash, Western Montana
… loams that contain 50% angular rock fragments. A rainfall simulator was used to measure overland flow associated with pre- and post-burn treatments within replicated 0.5 m2 plots. Rainfall simulations were also conducted on adjacent unburned plots, before and after the manual removal of the duff …
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The Effects of Forest Fires on Runoff Rates: The Role of Duff Removal and Surface Sealing by Vegetative Ash, Western Montana
… loams that contain 50% angular rock fragments. A rainfall simulator was used to measure overland flow associated with pre- and post-burn treatments within replicated 0.5 m2 plots. Rainfall simulations were also conducted on adjacent unburned plots, before and after the manual removal of the duff …
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Evaluation of Rotational Bale Grazing as an Alternative Winter-Hay Feeding System for Beef Cows
… in comparison to traditional SP. Artificial rainfall simulations were conducted on a SP, RBG first paddock grazed in the rotation (RBG first), and RBG last paddock grazed in the rotation (RBG last). The most significant differences were observed between the RBG first and last treatments, with …
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Phosphorus runoff potential of different sources of manure applied to fescue pastures in Virginia
… Forage was cut and removed monthly (n=5). Five rainfall simulations (65-70 mm/h) were conducted at three occasions (June, August, and October); the soil moisture was below field capacity at two events. Continuous surface runoff was collected for 30 min from each plot in accordance with the …