New Mexico Water Science Center
NEW MEXICO PROJECTS
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Urban Storm-Water Program in the Albuquerque Metropolitan AreaProject Number: 8637-9L801 SUMMARYStormwater runoff in the Albuquerque urban area. The system of drainage channels and natural stream channels in the Albuquerque metropolitan area is a source of concern because of potential local flooding and water-quality problems. Rapid urbanization since 1970 has increased precipitation runoff to these channels, which in many instances return flow to the Rio Grande. As an important element of the City of Albuquerque’s water-resources management, accurate hydrologic data are needed for designing storm drainage and addressing storm-water-quality regulations established by the U.S. Environmental Protection Agency’s National Pollution Discharge Elimination System (NPDES). The Albuquerque Metropolitan Arroyo Flood Control Authority (AMAFCA) and the City of Albuquerque, in cooperation with the U.S. Geological Survey, began a program in 1976 to collect hydrologic data to help assess the quality and quantity of surface-water resources and determine long-term trends in the Albuquerque area. To meet regulatory requirements, long-term streamflow data are analyzed in conjunction with water-quality sampling to compute constituent loading over time. In addition, accurate hydrologic data are necessary to calibrate computer models that aid engineers and city planners in the estimation of storm-water runoff. During any particular water year (October 1 to September 30 of the following year) since 1976, a selected number of streamflow-gaging stations and rain gages are operational in the Albuquerque urban-data collection program. The number of gaging stations and rain gages may change for any one water year. Gaging stations measure runoff from undeveloped basins as well as urbanized watersheds. A selected number of gaging stations also are used for water-quality sampling sites. All data are recorded at 5-minute intervals and transferred from field recorders to the USGS electronic database approximately every month. Rainfall data are collected annually using tipping-bucket rain gages. |