Hydrologic design aid for urban grass filter strips

2015 ◽  
Vol 30 (1-2) ◽  
pp. 4-13 ◽  
Author(s):  
A. Osman Akan ◽  
Serter Atabay
Keyword(s):  
Filter Strips ◽  
Grass Filter Strips ◽  
Hydrologic Design

Sediment behaviour in grass filter strips

1999 ◽  
Vol 39 (9) ◽  
pp. 129-136 ◽  
Author(s):  
Ana Deletic
Keyword(s):  
Overland Flow ◽  
Complex Model ◽  
Trapping Efficiency ◽  
Artificial Turf ◽  
Filter Strips ◽  
Natural Grass ◽  
Natural Turf ◽  
Sediment Types ◽  
Grass Filter Strips ◽  
The Relationship

Sediment transport was studied in non-submerged overland flow over grass in a laboratory. Artificial turf (astro-turf) was used to simulate natural grass and no infiltration was allowed at this stage of the investigation. Experiments were conducted for different grass densities, flow rates, sediments inflows, and sediment types. It was observed that concentration of sediment in runoff decreases exponentially with the distance and reaches asymptotically a constant value. Measured sediment deposition was compered with the results calculated by the Kentucky model (tollner et al., 1976). The model over-predicted grossly the trapping efficiency of all particle fractions, but it is unreliable particularly for small particles. A new simplified relationship was established between particle fall number, Nf, and percentage of particles trapped in the grass. The relationship should be verified on natural grass before it is used in practice. Finally, infiltration of water and particles should be studied on natural turf, as well as, influence of grass blades bending, before the complex model of sediment behaviour in grass is established.

Effect of Grass Filter Strips on PO4-P and Soil Loss in Runoff from Forage Cropland

2010 ◽  
Vol 30 (4) ◽  
pp. 309-316
Author(s):  
Nam-Chul Jo ◽  
Sei-Hyung Yoon ◽  
Ki-Young Kim ◽  
Ki-Won Lee ◽  
Meng-Jung Kim ◽  
...  
Keyword(s):  
Soil Loss ◽  
Filter Strips ◽  
Grass Filter Strips

scholarly journals Effect of Grass Filter Strips on NO3-N in Runoff from Forage Cropland

2011 ◽  
Vol 53 (1) ◽  
pp. 51-57
Author(s):  
Nam-Chul Jo ◽  
Won-Ho Kim ◽  
Sung Seo ◽  
Sei-Hyung Yoon ◽  
Ki-Won Lee ◽  
...  
Keyword(s):  
Filter Strips ◽  
Grass Filter Strips

SEDIMENT AND NITROGEN TRANSPORT IN GRASS FILTER STRIPS

1999 ◽  
Vol 35 (4) ◽  
pp. 867-875 ◽  
Author(s):  
Aida Mendez ◽  
Theo A. Dillaha ◽  
Saied Mostaghimi
Keyword(s):  
Nitrogen Transport ◽  
Filter Strips ◽  
Grass Filter Strips

scholarly journals Runoff and Sediment from Row-crop, Row-crop with Grass Strips, Pasture, and Forest Watersheds

2006 ◽  
Vol 19 (2) ◽  
pp. 137-149 ◽  
Author(s):  
Ranjith P. Udawatta ◽  
Gray S. Henderson ◽  
John R. Jones ◽  
R. David Hammer
Keyword(s):  
Riparian Buffers ◽  
Filter Strips ◽  
Total Runoff ◽  
Row Crop ◽  
Sediment Mass ◽  
Sediment Loss ◽  
Forest Watersheds ◽  
Grass Filter Strips ◽  
Runoff Events ◽  
Buffer Condition

Abstract Comparisons of runoff and sediment loss from row-crop with and without riparian buffers, pasture and grass filter strips are limited. Effects of precipitation, landuse and buffer condition on runoff and sediment loss were examined from 1997 to 1999 in eight watersheds with varying proportions of row-crop, pasture, riparian buffers and grass filter strips. Runoff volume and sediment mass from row-crop watersheds were inversely related to the percentage of forest and pasture cover. Forest (n = 2), pasture (n = 3), row-crop (n = 2) and a row-crop watershed with grass filter strips (RC-GFS) had 3‑yr mean runoff of 939, 1,560, 3,434 and 1,175 m3 ha‑1 yr‑1, respectively. Runoff was greater from all landuses in a year when precipitation was 36% above normal (1998). The largest single runoff event from each watershed accounted for 11 to 25% of its total runoff. Forest, pasture, row-crop and RC-GFS watersheds lost 1,017, 1,241, 3,679 and 2,129 kg ha‑1 yr‑1 of sediment, respectively. In 1998, the RC-GFS watershed lost more sediment than row-crop watersheds and had less runoff and sediment loss in years with normal or below normal precipitation. Row-crop watersheds with 55% pasture reduced runoff and sediment loss by 55 and 66%, respectively, compared to row-crop watersheds. During 90% of the runoff events, more soil was lost from row-crop watersheds than pasture or forest watersheds. Results suggest that 3‑4 m grass filter strips, maintenance of 55% or more pasture/CRP land within row-crop watersheds and intact riparian buffers significantly reduce runoff and sediment losses from row-crop watersheds.

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