Water School

What does “overdraft” mean?

To overdraft a reservoir, aquifer or basin is to withdraw water out faster than the water can be replenished by rain, runoff or percolation.  Overdraft may also refer to an use of the permitted yield of a reservoir.




The information provided on this site is intended as background on water within the Brazos River basin. There should be no expectation that this information is all encompassing, complete or in any way examines every aspect of this very complex natural resource.

If you have questions about a post or would like additional information, please contact us or call 888-922-6272.

canoe water use meta tag solids contaminants corps of engineers dissolved solids sanitation drought releases water clarity subwatershed treatment employment maps riparian septic water cycle golden algae electric companies drinking water supply sludge Board rights wetland water treatment algae subsidence district clarity runoff golden algea basin effluent salinity volume cfs costs evaporation emergency use pharmaceuticals USGS water supply direct re-use dam soil speaker brackish gulf climate minerals infection anaerobic lake levels use recreation fertilizer governance TCEQ hydropower hydrilla wildlife planning farming PAM water electricity system fishing bed and banks taste industry bottled water lakes gate river oxygen authority storage parasite canoeing legislation mgd mission insurance drilling watershed hydrologic cycle permit inland inundated marsh habitat septic system pollutants riverine biosolids lake kayak spillway channel water quality camping beneficial use landscaping E coli depth groundwater wetlands filter ground water bay classification precipitation xeriscape watercourse gas possum kingdom wastewater salt reservoir tributary flood control lake streamflow conservation flood pool sediment measure lawn aerobic stream subsidence E. coli contract well lake level water plants boating granbury allens creek reservoir consumption agricultural rain calcium sewage corps environment acre-feet chlorides smell organic surface water hydrology streamflow acre-foot water rights water planning aquifer jobs fish kill map impound reservoirs indirect re-use agriculture appropriation water code potable mainstem municipal monitor industrial quality estuary hunting medicine dock main stem environmental mitigation flood turbidity spring fork chlorine gage invasive plants limestone