Gate 1 · East
Closed
0%
Rock Koshkonong
Lake Koshkonong
Authorized water levels
Authorized range
Lake level
776.87ft
Observed
Above authorized maximum
- Target
- 776.20 ft
- Range
- 775.73–776.75 ft
- Season
- Summer
Above the explicit authorized maximum. NGVD29 · n/a. Status is stated in text and is not conveyed by color alone.
From Water-level order IP-SC-2019-54-01639.
Measured levelOperating rangeTarget
Hover or focus a point for details
Current readings
- ROCK RIVER AT NEWVILLE, WI
- 3,090cfs
- FORT ATKINSON WWTP precipitation
- 0in
- FORT ATKINSON WWTP temperature
- 60°F
Structures
Indianford Dam gates
Current positions at the district structures · 4 of 12 open.
Indianford Dam
Logged Sep 15, 2026, 4:30 PM CDT.
Gate 2 · East
Closed
0%
Gate 3 · East
Fully open
100%
Gate 4 · East
Fully open
100%
Gate 5 · East
Closed
0%
Gate 6 · East
Closed
0%
Gate 7 · West
Closed
0%
Gate 8 · West
Closed
0%
Gate 9 · West
Closed
0%
Gate 10 · West
Partially open
50%
Gate 11 · West
Partially open
50%
Gate 12 · West
Closed
0%
District updates
Public operations notes
Updates shared by lake operators.
Posted 4:30 PM
Holding east 3–4 fully open and west 4–5 at 50% after the June high-water pattern. Monitoring the current USGS lake reading.
- Gates:
- 25% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 30% → 100% open
- Indianford Dam · Gate 40% → 100% open
- Indianford Dam · Gate 100% → 50% open
- Indianford Dam · Gate 110% → 50% open
Posted 8:30 AM
End-of-month log. East 3–4 open; west 4–5 at 50%. Lake 776.83 ft, stable.
- Gates:
- 25% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 100% → 50% open
- Indianford Dam · Gate 110% → 50% open
Posted 10:15 AM
Reopened east 3–4 and set west 4 to 25% after the lake climbed to 776.94 ft.
- Gates:
- 19% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 40% → 100% open
- Indianford Dam · Gate 100% → 25% open
Posted 7:45 AM
All twelve slide gates closed. Lake 776.80 ft and stable after the mid-month crest.
- Gates:
- 0% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 3100% → 0% open
- Indianford Dam · Gate 4100% → 0% open
Posted 8:00 AM
Summer operating period starts today. Lake still above the 776.55 ft summer maximum; west 4 at 50% and west 6 fully open.
- Gates:
- 46% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 100% → 50% open
- Indianford Dam · Gate 1250% → 100% open
Posted 8:00 AM
Opened west 4 and 6 fully. Lake 776.98 ft; watching the rise from the weekend rain.
- Gates:
- 33% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 100% → 100% open
- Indianford Dam · Gate 120% → 100% open
Posted 7:30 AM
Cracked west gate 2 to 50% after the overnight drop. Lake stable near 776.67 ft.
- Gates:
- 21% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 80% → 50% open
Posted 8:15 AM
Closed east 2 and 5 as discharge dropped below 900 cfs. Two east gates remain open.
- Gates:
- 17% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 2100% → 0% open
- Indianford Dam · Gate 5100% → 0% open
Posted 8:45 AM
East slide gates 2–5 fully open. Lake 776.88 ft and stable; holding this pattern overnight.
- Gates:
- 33% total open
- Rain:
- 0 in / 24hr
Gate changes
- Indianford Dam · Gate 20% → 100% open
- Indianford Dam · Gate 30% → 100% open
- Indianford Dam · Gate 40% → 100% open
- Indianford Dam · Gate 50% → 100% open
Outlook
Lake-area forecast
National Weather Service forecast, issued .
This Afternoon
- Temperature
- 67°F
Sunny
0% chance of precipitation
Wind NW 10 mph
Tonight 41°F. Clear then Patchy Frost
Details
Sunny, with a high near 67. Northwest wind around 10 mph.
Monday
High 63°F
Low 45°F
Patchy Frost then Sunny
Details
Patchy frost before 9am. Sunny, with a high near 63. Northwest wind 0 to 5 mph.
Tuesday
High 70°F
Low 52°F
Sunny
Details
Sunny, with a high near 70. South wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday
High 70°F
Low 46°F
Sunny
Details
Sunny, with a high near 70. Northwest wind 5 to 10 mph.
History
Conditions & readings
Latest readings plus archived water data for 2026-09-28 through 2026-10-04.
Data sources & observation times
Provider stations that supply the current readings above.
0 in
Observed
60 °F
Observed
776.87 ft
Observed
3,090 cfs
Observed
Supporting conditions
Discharge, precipitation, and temperature for the selected archive period. Lake level is shown in the operating range chart above.
ROCK RIVER AT NEWVILLE, WI
cfs
ROCK RIVER AT NEWVILLE, WI: 1900 readings from Sep 28 to Oct 4. Latest 3090.00 cfs; min 1520.00; max 5620.00.
Hover or focus a point for details
FORT ATKINSON WWTP precipitation
in
FORT ATKINSON WWTP precipitation: 7 readings from Sep 28 to Oct 4. Latest 0.00 in; min 0.00; max 0.71.
Hover or focus a point for details
FORT ATKINSON WWTP temperature
°F
FORT ATKINSON WWTP temperature: 7 readings from Sep 28 to Oct 4. Latest 60.00 °F; min 54.00; max 64.00.
Hover or focus a point for details
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,090 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,150 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,130 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,290 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,290 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,250 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,110 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,090 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,020 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.89 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,070 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,070 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,910 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.89 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,890 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,990 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,930 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.85 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,140 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,120 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,910 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.88 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,980 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,910 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,910 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,980 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,110 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,930 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,170 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,900 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,010 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,910 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,950 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,900 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,900 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,020 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,110 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,140 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,050 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,000 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.85 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,890 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,840 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,060 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.89 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,080 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,160 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,960 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.88 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,970 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,970 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,110 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,130 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,210 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,950 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,980 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,010 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,170 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.9 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,000 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,180 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,970 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,020 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,970 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,990 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.87 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,990 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,990 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,970 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.88 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,000 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,050 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,040 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,990 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,960 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,940 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.86 ft | |
| ROCK RIVER AT NEWVILLE, WI | 3,110 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,020 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,040 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.88 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,960 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,900 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 2,980 cfs | |
| LAKE KOSHKONONG NEAR NEWVILLE, WI | 776.88 ft | |
| ROCK RIVER AT NEWVILLE, WI | 2,980 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,030 cfs | |
| ROCK RIVER AT NEWVILLE, WI | 3,170 cfs |
Place
Lake, dam, and gauges
Lake, dam, and gauge locations for this district. Choose a name in the list to highlight it on the map.
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District
Mailing and contacts
Printed mailing text is listed here. The map pin is a public place, not the physical location of a PO box.
Rock Koshkonong Lake District
Rock Koshkonong Lake District, PO Box 63, Edgerton, WI 53534
Board Of Commissioners
Mike Shumaker
Chair