* Updates for this data series are no longer available from the U.S. Geological Survey.
Years Available: 1985, 1990
Permanent Link: http://data.sagepub.com/sagestats/6522
General Notes: *Median value gives the value for the "average" county for this metric, the 50th percentile of all counties reporting data. **Water that is lost in transit from a pipe, canal, conduit, or ditch by leakage or evaporation. Leakage from an irrigation ditch, for example, may percolate to a groundwater source and be available for further use. 1955-1995: Conveyance losses reported nationally 2000-later: Conveyance losses not estimated nationally