TornadoLiveMap

Dickinson Bayou at SH 517 near Alvin — water level right now

Galveston County, Texas · NWS gauge DNBT2
Loading the latest reading…
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current stage (ft)
 
21
minor flood stage
 
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flood status
official NWS category
Official NOAA forecast → USGS data → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 19
minor · 21
moderate · 22
major · 25
Flood stageLevel (ft)What it means
Major flood stage25extensive inundation and significant evacuations — a serious event
Moderate flood stage22some buildings and roads inundated; evacuations possible
Minor flood stage21low-lying roads and fields near the river start to flood
Action stage19water is approaching flood level — time to pay attention

Highest floods on record here

The National Weather Service has no historic crest list on file for this gauge.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Clear Creek at Friendswood 6 mi away · loading… Highland Bayou at FM 646 near Santa Fe 6 mi away · loading… Mustang Bayou at SH 6 near Alvin 6 mi away · loading… Clear Creek above Telephone Road 13 mi away · loading… Austin Bayou at SH 35 near Liverpool 14 mi away · loading… Hickory Slough at FM 865 near Pearland 14 mi away · loading…

Gauge details

NWS gauge IDDNBT2
USGS site08077640
CountyGalveston
StateTexas
NWS forecast officeDickinson
River forecast centerWest Gulf River Forecast Center
Coordinates29.436, -95.17
Time zoneCST6CDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about Dickinson Bayou at SH 517 near Alvin

Is Dickinson Bayou at SH 517 near Alvin flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Minor flooding at this gauge begins at 21 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Dickinson Bayou at SH 517 near Alvin?

major flood stage 25 ft, moderate flood stage 22 ft, minor flood stage 21 ft, action stage 19 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Dickinson and local emergency management.