Greens Bayou near Houston, TX

River level and flood forecast · Harris County

Normal2.0 ftas of Mon 2:45 PM

The river is 28.0 ft below flood stage (30 ft).

The last 7 days and the forecast

-10010203040TueWedThuFriSatSunMonAction 27 ftFlood 30 ftModerate 32 ftMajor 33 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

Major flood stage33 ft
Moderate flood stage32 ft
Flood stage30 ft
Action stage27 ft
Record crest (August 28, 2017)44.85 ft

What floods at each level

From the National Weather Service, highest first.

  • 33 ftMajor lowland flooding begins in the vicinity of the gage.
  • 32 ftModerate lowland flooding begins at the gage.
  • 30 ftMinor lowland flooding begins in the vicinity of the gage.

Highest crests on record

  1. 44.85 ft — August 28, 2017
  2. 39.4 ft — June 27, 1989
  3. 36.75 ft — May 18, 1989
  4. 36.66 ft — October 29, 2002
  5. 36.24 ft — September 15, 2008

Recent crests: 33.61 ft (September 20, 2019) · 44.85 ft (August 28, 2017) · 32.22 ft (April 19, 2016) · 34.28 ft (October 31, 2015) · 34.19 ft (May 26, 2015)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (GBLT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.