Reservoir Report

Granger Lk Nr Granger reservoir

Texas, USA USGS
Today high
--
Tonight low
--
Current storage
504ft
% of normal
0%
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Right now · current storage
Granger Lk Nr Granger
USGS · 08105600
504 ft
As of 2026-05-19
Seasonal avg
505
Record max
519
24h change
0.0%
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Granger Lk Nr Granger -- None reservoir
Granger Lk Nr Granger None
About this reservoir

Granger Lk Nr Granger

Granger Lake is a reservoir located in Williamson County, Texas, near the city of Granger. The lake was created in 1980 by the construction of a dam on the San Gabriel River. The primary purpose of the lake is to provide flood control, but it also serves as a source of drinking water and recreation for the surrounding area. The lake has a surface area of 4,400 acres and a maximum depth of 50 feet. The hydrology of the lake is influenced by the San Gabriel River and several smaller tributaries. The lake is also fed by snowpack from the nearby hills. The lake is used for a variety of recreational activities, including boating, fishing, and camping. The surrounding area is primarily agricultural, with crops including cotton, corn, and wheat.

StateNone
OperatorUSGS
Site ID08105600
Percent of normal0%
Last updated2026-05-19
Records since2007
Storage trends

Daily levels at Granger Lk Nr Granger

Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.

Lake or reservoir water surface elevation above NGVD 1929, ft

ft · code 62614

Precipitation, total, in

in · code 00045

Wind direction, degrees clockwise from north

Deg · code 00036

Wind speed, mph

mph · code 00035

Detailed forecast

Plan around the weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Granger Lk Nr Granger -- inflows here typically show up in storage 24-72 hours later.

Track Granger Lk Nr Granger in the Snoflo app

Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").

FAQ

About Granger Lk Nr Granger

Where does the data for Granger Lk Nr Granger come from?

Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.

How often is the report updated?

Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.

What does the Hazard hazard rating mean?

The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.

What's "% of normal"?

The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).

Can I get alerts when storage crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.