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The La Frontera Section I and II development (a 113-acre commercial retail center) is located at the Northwest corner of IH-35 and FM 1325 in Round Rock, Texas. Doucet designed a regional stormwater detention facility to protect downstream properties (structures within the floodplain), and a stormwater quality treatment facility to protect the northern Edwards’ Aquifer. In addition, three downstream road crossings were sub-standard and did not allow for safe passage in a 25-year storm event. Doucet performed a hydrologic analysis on this tributary of Lake Creek and designed culvert improvements for the three road crossings.
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.
