Water School

What is a 10-year flood?

A 10-year flood is a high streamflow that overflows the natural or artificial banks of a waterway and has a 10% chance of occurring in any given year.




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.

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