Outlook

Middle estimate, with the range the level has an 8 in 10 chance of landing in. The bars share one scale: change from today.

Next week · by Nov 2562.1 ft171.32 m−0.1 ft−0.03 m from todayLikely 562.0171.31 to 562.3 ft171.38 mChance of ending 1 ft0.3 m or more higher: under 5%

In 2 weeks · by Nov 9562.0 ft171.31 m−0.1 ft−0.05 m from todayLikely 562.0171.28 to 562.3 ft171.38 mChance of ending 1 ft0.3 m or more higher: under 5%

In a month · by Nov 25562.0 ft171.29 m−0.2 ft−0.06 m from todayLikely 561.8171.22 to 562.8 ft171.53 mChance of ending 1 ft0.3 m or more higher: 5%

Rises are harder to call. Heavy rain in the watershed can push the lake above these ranges within days.

Rain, past 7 days: 0.0 in0 mm watershed average
Rain forecast, next 7 days: 0.5 in13 mm normal 1.1 in27 mm

Statistical estimate, not safety, boating, or water-quality advice. For ramps, closures and advisories, check the lake operator.

Map

Map of Lake Bonham with the dam, level gauge and 2 public boat ramps.

Dam
Level gauge
Public boat ramp

Ramp locations from Texas Parks and Wildlife. Whether a ramp is open depends on the lake level; check the operator.

Level and outlook

FeetMeters above sea level

Measured
Middle estimate
8 in 10 range
Full pool

Show outlook as a table

Date	Low end	Middle	High end
Nov 2	562.0171.31	562.1171.32	562.3171.38
Nov 9	562.0171.28	562.0171.31	562.3171.38
Nov 25	561.8171.22	562.0171.29	562.8171.53

How well this outlook has done here

We tested the 2-week outlook on past years at this lake, as if made once a week with only what was known that day.

On average it was off by: 0.25 ft0.08 m Assuming the level stays the same was off by 0.37 ft0.11 m
Actual level inside our range: 79% of 432 tests; the range is built to catch 8 in 10

The rise chance uses the same threshold for every lake: 1 ft (0.3048 m).

Connected lakes

Water from upstream lakes flows into this one; water released here flows on downstream.

Downstream

Bois d'Arc Lake531.1 ft161.87 m · 87%

Nearby lakes

Closest lakes in a straight line, with today's level.

About Lake Bonham

Lake Bonham, also called Bonham City Lake, is a water-supply reservoir on Timber Creek in Fannin County, completed in 1969 and owned by the City of Bonham. It drains a short distance downstream into Bois d’Arc Lake.

More: Wikipedia · Texas Water Development Board

Full pool (conservation): 565.0 ft172.21 m
Highest level since 1999: 571.0 ft174.04 m, Sep 2018
Lowest level since 1999: 560.3 ft170.79 m, Nov 2011
Surface area at normal pool: 1,105 acres447 ha
Conservation storage: 11,027 acre-feet14 million m³
Dam: Lake Bonham Dam, 1969
River or creek: Timber Creek
County: Fannin
Owner: City of Bonham

Elevations are feetmeters above sea level (NGVD29).

Common questions

Is Lake Bonham full right now?

On Oct 26 it was 562.2 ft, 2.8 ft below full pool (565.0 ft), holding 75% of its conservation storage.On Oct 26 it was 171.35 m, 0.86 m below full pool (172.21 m), holding 75% of its conservation storage.

Is Lake Bonham going up or down?

The middle estimate for Nov 9 is down about 0.1 ft, with an 8 in 10 chance it ends between 562.0 ft and 562.3 ft. The chance it ends 1 ft or more higher than today is under 5%. Heavy rain can change that quickly.The middle estimate for Nov 9 is down about 0.05 m, with an 8 in 10 chance it ends between 171.28 m and 171.38 m. The chance it ends 0.3 m or more higher than today is under 5%. Heavy rain can change that quickly.

Where does this data come from?

Daily levels come from the Texas Water Development Board and lake operators. The outlook is our own statistical model, using recent levels and forecast rain over the watershed.