Efficiency of Sediment Basins: Analysis of the Sediment Basins Constructed asPart of the Straight Creek Erosion Control Project

摘要

One practice that can be used to control pollutants in highway runoff is asediment basin. Sediment basins are either constructed of embankment or excavated into the existing ground. They intercept and temporarily store a specific volume of stormwater runoff. To provide water quality enhancement, this runoff is very slowly released from the basin over an extended period of time. As part of the Straight Creek Erosion Control Project, completed by CDOT in 1994, eleven sediment basins were constructed between the 'toe' of the I-70 fill slope and Straight Creek. The basins were built to remove sand and sediment from highway runoff so that sediment loadings into Straight Creek would be reduced. How much sand and sediment captured by these sediment basins along with the efficiency of the basins in removing sediment from the runoff are the primary subjects of this research report. The report describes what data was collected and how it was collected. In addition, the data analysis and findings are presented.