Nivelmap
EN

Big Sandy Reservoir water level

Reservoir, Wyoming, United States

Directions

Right now

Normal for mid-October

Surface elevation

6,737.95ft Up 2.85 ft over the last 7 days

Water stored
7,002 acre‑ft
6,730 6,740 6,750

History

History
6,7306,7406,750ftOct 12Oct 13Oct 14Oct 15Oct 166,7306,7406,750ftOct 12Oct 14Oct 16
6,7306,7406,750ftSep 19Sep 25Oct 2Oct 9Oct 166,7306,7406,750ftSep 19Oct 2Oct 16
6,7306,7406,7506,760ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20266,7306,7406,7506,760ftOct 2025Apr 2026Oct 2026
6,7206,7406,760ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20266,7206,7406,760ftOct 2016Oct 2021Oct 2026
6,7206,7406,760ftJanMarMayJulSepNov20266,7206,7406,760ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Big Sandy Reservoir is at 6,737.95 ft, in the normal range for mid-October.

That puts it 6.67 ft below the median of 6,744.62 ft for mid-October, based on 36 years of readings. A year ago it stood at 6,744.49 ft (−6.54 ft).

It has risen 2.85 ft over the past week. In the last month it has stayed between 6,733.28 ft and 6,737.95 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

Compared with 36 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
6,744.62 ft6.67 ft below the median for this date
Normal for this date
6,730.04 ft – 6,750.94 ft8 years in 10 fall in this range (36 years of records)
Same day last year
6,744.49 ft−6.54 ft
Lowest and highest in 30 days
6,733.28 ft – 6,737.95 ft
Lowest and highest in 12 months
6,732.50 ft – 6,754.57 ft

On the water at Big Sandy Reservoir

Normal levels mean few surprises on the water: ramps in use and the shoreline where you expect it.

Wear a life jacket on the water. Most boating deaths involve people who were not wearing one.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:35 AM Sunset 06:33 PM Daylight 10 hr, 58 min First quarter 50%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Big Sandy Reservoir near FarsonReservoir, Big Sandy Reservoir 6,738.33 ft Below flood stage +0.27 ft 1.3 mi
Eden ReservoirReservoir 6,704.41 ft Normal 4.3 mi
Big Sandy River at Gasson Bridge, near EdenRiver gauge, Big Sandy River 25.6 cfs Low −0.5 cfs 26 mi
East Fork River above East Fork Canal, near BoulderRiver gauge, East Fork River 16.24 ft No reference yet −0.05 ft 29 mi
New Fork River near Big PineyRiver gauge, New Fork River 2.82 ft Below flood stage +0.02 ft 33 mi
East Fork at New ForkRiver gauge, East Fork 92.6 cfs Very high −8.4 cfs 33 mi
Green River below Fontenelle ReservoirRiver gauge, Green River 11.10 ft Below flood stage −0.01 ft 36 mi
Fontenelle ReservoirReservoir 6,498.29 ft High 37 mi

Questions and answers

How does Big Sandy Reservoir compare with last year?

It is 6.54 ft lower than on the same day last year, when the reading was 6,744.49 ft.

What is a normal level for Big Sandy Reservoir in mid-October?

The median for mid-October is 6,744.62 ft. In 8 years out of 10 the reading falls between 6,730.04 ft and 6,750.94 ft, based on 36 years of records.

Is Big Sandy Reservoir really 6,737.95 ft deep?

No. 6,737.95 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Big Sandy Reservoir today?

On Oct 16, 2026, the surface elevation was 6,737.95 ft. Up 2.85 ft over the last 7 days.

Is Big Sandy Reservoir rising or falling?

Up 2.85 ft over the last 7 days.

Is the level of Big Sandy Reservoir normal?

Normal for mid-October. Compared with 36 years of daily readings for this time of year.

How often is this data updated?

The U.S. Bureau of Reclamation publishes a new reading once a day. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Bureau of Reclamation
Station code
usbr:277 (Agency page)
Coordinates
42.26841, -109.43201 (WGS84)
Update interval
once a day
Licence
Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 6,737.95 ft 2026-10-16 07:00 Provisional
Water stored 7,002 acre‑ft 2026-10-16 07:00 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

U.S. Bureau of Reclamation: Big Sandy Reservoir (usbr:277). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/wyoming/big-sandy-reservoir

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.