Dublin and Pleasanton

Pleasanton: Stony Brook Lane Map
Dublin: Fallon Rd. above Antone Parkway Map
Pleasanton: Valley Ave. area Map

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In Pleasanton, a swale edging the trail between homes on Stony Brook Lane and Arroyo Valle helps keep pollutants out of the wooded creek (right above, left below).
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In Dublin, cattails and willows between homes and Fallon Road make a natural-looking waterway, but this very large swale has underdrains to prevent flooding. In addition to filtering runoff from road and subdivision, it receives winter rains from seasonal tributaries upstream.
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Note pedestrian bridge linking road to homes. Click on thumbnails left for closer views of bridge and vegetation.

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Below, in Pleasanton near Valley Avenue south of Bernal Avenue, subdivisions with curbs on only one side of the street send runoff to Pleasanton’s detention ponds. Some flows via swales (left, with high-flow inlet). Flow through the swales or overland reduces pollution and allows water to filter into soil.
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