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The Shoal Creek hike and bike trail experienced erosion problems in the lower reaches of Shoal Creek, often completely washing the trail out at some locations along the top of the channel banks. The project designed solutions for nine separate erosion locations along Shoal Creek in the area from 6th Street to 29th street. Nine areas were selected for improvements and were developed using varying techniques such as limestone boulders with geogrid for stability, erosion matting, permeable concrete for trails, and bioengineering were employed to manage erosion of the trails while creating a natural appearance for the channel.
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.
