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Lake Almanac

Rock Koshkonong Lake District

Lake Koshkonong

Authorized water levels

Authorized range

Lake level

776.89ft

Observed

Range not confirmed
Target
Not set
Range
775.73–776.75 ft
Season
Not determined

Conditional applicability unresolved. Possible summer maximums: 776.55 ft and 776.75 ft.. local · MSL as stated in WP-2005 for Lake Koshkonong. Status is stated in text and is not conveyed by color alone.

From WDNR water level order 3-WP-2005.

Measured levelOperating range

Hover or focus a point for details

Current readings

Rock River discharge at Indianford
1,390cfs
Daily precipitation
0in
Air temperature
54.5°F

Structures

Indianford Dam gates

Current positions at the district structures · 6 of 12 open.

Indianford Dam

Logged Aug 11, 2026, 10:30 AM CDT.

Indianford East 1

Partially open

75%

Indianford East 2

Partially open

75%

Indianford East 3

Partially open

50%

Indianford East 4

Partially open

50%

Indianford East 5

Partially open

25%

Indianford East 6

Partially open

25%

Indianford West 1

Closed

0%

Indianford West 2

Closed

0%

Indianford West 3

Closed

0%

Indianford West 4

Closed

0%

Indianford West 5

Closed

0%

Indianford West 6

Closed

0%

District updates

Public operations notes

Updates shared by lake operators.

  1. Posted 10:30 AM

    Reduced gate openings after the weekend crest. Monitoring Thursday thunderstorm chances and will adjust if lake level trends above the operating order.

    Gates:
    25% total open
    Air:
    78°F
    Rain:
    0.12 in / 24hr

    Gate changes

    • Indianford Dam · Indianford East 10% → 75% open
    • Indianford Dam · Indianford East 20% → 75% open
    • Indianford Dam · Indianford East 3100% → 50% open
    • Indianford Dam · Indianford East 4100% → 50% open
    • Indianford Dam · Indianford East 50% → 25% open
    • Indianford Dam · Indianford East 60% → 25% open
    • Indianford Dam · Indianford West 450% → 0% open
    • Indianford Dam · Indianford West 550% → 0% open

  2. 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 · Indianford West 40% → 50% open
    • Indianford Dam · Indianford West 50% → 50% open

  3. 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 · Indianford East 40% → 100% open
    • Indianford Dam · Indianford West 40% → 25% open

  4. 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 · Indianford East 3100% → 0% open
    • Indianford Dam · Indianford East 4100% → 0% open

  5. 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 · Indianford West 40% → 50% open
    • Indianford Dam · Indianford West 650% → 100% open

  6. 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 · Indianford West 40% → 100% open
    • Indianford Dam · Indianford West 60% → 100% open

  7. Posted 7:30 AM

    Cracked west gate 2 to 50% after the overnight drop. Lake stable near 776.67 ft.

    Gates:
    21% total open
    Air:
    73°F
    Rain:
    0.07 in / 24hr

    Gate changes

    • Indianford Dam · Indianford West 20% → 50% open

  8. Posted 8:15 AM

    Closed east 2 and 5 as discharge dropped below 900 cfs. Two east gates remain open.

    Gates:
    17% total open
    Air:
    72°F
    Rain:
    0.04 in / 24hr

    Gate changes

    • Indianford Dam · Indianford East 2100% → 0% open
    • Indianford Dam · Indianford East 5100% → 0% open

  9. 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
    Air:
    68°F
    Rain:
    0 in / 24hr

    Gate changes

    • Indianford Dam · Indianford East 20% → 100% open
    • Indianford Dam · Indianford East 30% → 100% open
    • Indianford Dam · Indianford East 40% → 100% open
    • Indianford Dam · Indianford East 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.

  1. Monday

    High 64°F

    Low 46°F

    Patchy Frost then Sunny

    Details

    Patchy frost before 9am. Sunny, with a high near 64. Northwest wind around 0 mph.

  2. Tuesday

    High 70°F

    Low 52°F

    Sunny

    Details

    Sunny, with a high near 70. South wind 5 to 15 mph, with gusts as high as 25 mph.

  3. Wednesday

    High 71°F

    Low 46°F

    Mostly Sunny

    Details

    Mostly sunny, with a high near 71. Northwest wind 5 to 10 mph.

History

Conditions & readings

Latest readings plus archived water data for 2026-09-28 through 2026-10-04.

Archive

Choose dates

Operating range, charts, and the observation table use this period (90 days max).

Data sources & observation times

Provider stations that supply the current readings above.

  • Air temperature

    ACIS · MSNthr

    ACIS

    54.5 °F

    Observed

  • Daily precipitation

    ACIS · MSNthr

    ACIS

    0 in

    Observed

  • Lake Koshkonong elevation

    USGS · 05427235 · 62615

    USGS Water Data for 05427235

    776.89 ft

    Observed

  • Rock River discharge at Indianford

    USGS · 05427570 · 00060

    USGS Water Data for 05427570

    1,390 cfs

    Observed

Supporting conditions

Discharge, precipitation, and temperature for the selected archive period. Lake level is shown in the operating range chart above.

Daily precipitation

in

Daily precipitation: 6 readings from Sep 28 to Oct 3. Latest 0.00 in; min 0.00; max 1.24.

Hover or focus a point for details

Air temperature

°F

Air temperature: 6 readings from Sep 28 to Oct 3. Latest 54.50 °F; min 52.50; max 64.00.

Hover or focus a point for details

Archived observations from 2026-09-28 through 2026-10-04
Lake Koshkonong elevation776.89 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.88 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.89 ft
Lake Koshkonong elevation776.88 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.9 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.88 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.88 ft
Lake Koshkonong elevation776.88 ft
Lake Koshkonong elevation776.87 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.85 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.86 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.84 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.83 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.81 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.82 ft
Lake Koshkonong elevation776.79 ft
Lake Koshkonong elevation776.8 ft
Lake Koshkonong elevation776.8 ft

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

PO Box 100 Edgerton, WI 53534

Board

Office

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