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Most of the Austin’s watersheds, including urban and suburban watersheds, are drained by streams that exhibit existing creek bank erosion problems and have the potential for future creek bank degradation. The concern for future creek bank failures, long term channel degradation, and their impact to creekside residents and water quality initiated the City of Austin Drainage Utility Department to authorize the city wide watershed erosion assessments in January 1997. The 17 watersheds are as follows:
Barton Creek Watershed
Blunn Creek Watershed
Boggy Creek Watershed
Bull Creek Watershed
Buttermilk Creek Watershed
Country Club Creek Watershed
East Bouldin Creek Watershed
Fort Branch of Boggy Creek Watershed
Johnson Creek Watershed
Little Walnut Creek Watershed
Shoal Creek Watershed
Tannehill Branch of Boggy Creek Watershed
Waller Creek Watershed
West Bouldin Creek Watershed
Walnut Creek Watershed
Williamson Creek Watershed
Identified as public land (approx 16 acres) within the West Bouldin Creek watershed, Doucet provided water quality, erosion control, and low storm intensity flood control to the creek and riparian corridor. The Best Management Practices (BMP) consisted of a channel runoff diversion structure, a sedimentation/extended detention pond, and a downstream level spreader with a ½-acre vegetative filter strip prior to discharging flow back into West Bouldin Creek
Working with the Parks and Recreation Department, Doucet provided engineering services for a previous landfill site bounded by Town Lake to the north, Mopac Expressway to the east, Stratford Drive to the south, and Eanes Creek to the west. Doucet performed the following: Hydrologic & Hydraulic Analysis for the contributing drainage area upstream of the project site Channel Improvements Design to convey runoff using 6” Conlock with vegetation infill and covered with biodegradable soil retention blankets Liner System Design using Geomembrane EPDM Rubber Liner for the new channel Bank Stabilization development using vegetated reinforced soils, vegetation planting, soil retention blanket, rock riprap, limestone blocks and AKWARDRAIN for Eanes Creek.
