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Shadehill Reservoir water level

Reservoir, South Dakota, United States

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Right now

Low for mid-October

Surface elevation

2,265.23ft Down 0.15 ft over the last 7 days

Water stored
89,278 acre‑ft
2,265 2,270

History

History
2,2632,2652,2682,270ftOct 12Oct 13Oct 14Oct 15Oct 172,2632,2652,2682,270ftOct 12Oct 14Oct 17
2,2652,270ftSep 19Sep 26Oct 3Oct 10Oct 172,2652,270ftSep 19Oct 3Oct 17
2,2602,2652,270ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20262,2602,2652,270ftOct 2025Apr 2026Oct 2026
2,2602,2702,280ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20262,2602,2702,280ftOct 2016Oct 2021Oct 2026
2,2602,2652,2702,275ftJanMarMayJulSepNov20262,2602,2652,2702,275ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Shadehill Reservoir is below normal for mid-October, with the lake level at 2,265.23 ft.

That puts it 2.80 ft below the median of 2,268.03 ft for mid-October, based on 36 years of readings. A year ago it stood at 2,267.85 ft (−2.62 ft).

It has dropped 0.15 ft over the past week. With the water still dropping, the shoreline keeps moving out. In the last month it has stayed between 2,265.23 ft and 2,265.70 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
2,268.03 ft2.80 ft below the median for this date
Normal for this date
2,262.63 ft – 2,270.85 ft8 years in 10 fall in this range (36 years of records)
Same day last year
2,267.85 ft−2.62 ft
Lowest and highest in 30 days
2,265.23 ft – 2,265.70 ft
Lowest and highest in 12 months
2,265.25 ft – 2,268.78 ft

On the water at Shadehill Reservoir

A receding shoreline opens up beaches but also uncovers hazards: stumps, rocks and soft mud that are usually well under water.

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

Weather at the gauge

Rain in the last 3 days: 0.06 in.

18 Sun 64° 41° – Wind 12 mph
19 Mon 63° 34° – Wind 17 mph
20 Tue 76° 46° – Wind 14 mph
21 Wed 68° 49° – Wind 10 mph
22 Thu 81° 50° – Wind 18 mph
23 Fri 77° 52° 0.13 in, 31% Wind 25 mph
24 Sat 50° 39° 0.33 in, 39% Wind 27 mph

Forecast: Open-Meteo

Sunrise 07:10 AM Sunset 05:59 PM Daylight 10 hr, 49 min First quarter 53%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
North Fork Grand River near White ButteRiver gauge, North Fork Grand River −0.02 ft Below flood stage −0.01 ft 8 mi
Grand River near Thunder HawkRiver gauge, Grand River 5.07 ft Normal +0.02 ft 14 mi
South Fork Grand River near CashRiver gauge, South Fork Grand River 0.71 ft Very low −0.02 ft 22 mi
Cedar Creek near HaynesRiver gauge, Cedar Creek 4.01 ft Normal −0.02 ft 31 mi
Moreau River near FaithRiver gauge, Moreau River 0.60 ft Below flood stage ±0 38 mi

Questions and answers

How does Shadehill Reservoir compare with last year?

It is 2.62 ft lower than on the same day last year, when the reading was 2,267.85 ft.

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

The median for mid-October is 2,268.03 ft. In 8 years out of 10 the reading falls between 2,262.63 ft and 2,270.85 ft, based on 36 years of records.

Is Shadehill Reservoir really 2,265.23 ft deep?

No. 2,265.23 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 Shadehill Reservoir today?

On Oct 17, 2026, the surface elevation was 2,265.23 ft. Down 0.15 ft over the last 7 days.

Is Shadehill Reservoir rising or falling?

Down 0.15 ft over the last 7 days.

Is the level of Shadehill Reservoir normal?

Low 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:476 (Agency page)
Coordinates
45.75330, -102.20330 (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 2,265.23 ft 2026-10-17 06:00 Provisional
Water stored 89,278 acre‑ft 2026-10-17 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Shadehill Reservoir (usbr:476). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/south-dakota/shadehill-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.