Storm Water
Liberty-Chambers Navigation District Spillway Improvements

Klotz Associates plans to use the services of Chambers County Land Surveying for surveying services and Terracon Consultants for geotechnical services. The current project schedule calls for six months to complete design and six months for construction.
City of Austin Fort Branch Channel Improvements
The Klotz Associates team surveyed portions of the channel and updated the hydrologic and hydraulic models for the watershed. The team also conducted several field reconnaissance visits to the channel and photo documented it. Additionally, we performed a GIS evaluation of drainage area development conditions and extended the current hydraulic model upstream past US 290 to an approximately 64-acre drainage area. More than 260 structures were surveyed to update City database information for the Fort Branch Channel. Klotz Associates utilized updated information, hydrology, hydraulics, and slab data along with some high water marks calibrate the models to historical recent storm event. The drainage area, parent development, location of houses in the floodplain, and the floodplain boundaries were prepared in our GIS ArcView computer system. The team prepared several analyses to utilize available construction plans and reduce the structural flooding of homes and businesses. Klotz Associates then prepared six alternative analyses and cost estimates to provide the best reduction in structural flooding for the least cost. Options included structural improvements to the channel, culvert or bridge replacements, natural channel sections, and combinations of these options. Klotz Associates also prepared a hydraulic analysis of storm sewers along a portion of Westminster Drive to evaluate system capacities and to make recommendations to provide more storm sewer capacity in this area. Recommendations were submitted to the City of Austin in a report which documented the analyses, alternatives, and recommendations.
