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Channel Stabilization

Bostick Weir

bostick weir

The Bostick Weir, named after local conservationist Vern Bostick, was completed in 2003. The relatively large size of the structure made it the first on the Wash to require a Nevada State Dam Safety permit. The weir’s structure type is confined rock riprap, chosen because of its practicality, low cost, and more natural appearance.

Vern Bostick and Gerry Hester
Vern Bostick and Gerry Hester

The structure is designed as a two-stage weir. The upstream slope is 3:1, and the weir section has a minimum width of 16 feet and a length of 760 feet. The structure has a low flow weir elevation of 1,508.5 feet. The existing channel bed immediately below the weir section lies at approximately 1,498 feet. To meet expected future channel bed scour conditions, the structure's apron floor is set at an elevation of 1,490 feet.

About 45 acres of land were impacted by the weir construction activities. This acreage includes the permanent structure, areas graded within the channel, and construction equipment and material staging areas. The footprint of the structure itself is approximately 8 acres.

On Oct. 25, 2003, tons of volunteers joined the Wash Project Team for the fifth Wash Green-Up and helped plant some of the impacted area with native plant species. These efforts further armor the channel banks against erosion and improve habitat for the many species of wildlife that inhabit the Wash.

Now that the structure is complete, a large, shallow pond has developed immediately upstream of the weir, providing habitat for a variety of waterbirds and fish. Raptors, such as the Peregrine falcon, Osprey, and Northern Harrier have been seen hunting for their next meal among the pond’s new inhabitants.

Las Vegas Wash Project Coordination Team • 100 City Parkway, Suite 700 • Las Vegas, NV 89106 • (702) 822-3300