Drawdown

Trent-Severn Waterway National Historic Site

Drawdown is guided by research, engineering and decades of experience.

Drawdown is when water levels are lowered in the Trent-Severn Watershed.

It's a complex process that takes into consideration storage capacity of the lakes on the system, timing of fishery spawning, requirements for flood mitigation, typical fall and winter precipitation levels, downstream topography including constrictions like narrow river beds or dams, and overall volumes and flow rates.

For lakes Simcoe and Couchiching a unique guideline, called a "rule curve," is used to guide the lowering of water levels to allow room for future winter snow melt and precipitation. Since these lakes are so large and the outflows so small relative to the volume of water, the drawdown must be carefully managed to mitigate flooding and protect public safety.

In the Haliburton reservoir lakes area, drawdown occurs throughout the summer season to address downstream needs along the Trent-Severn Waterway. Water levels are based on equal percentage drawdown as developed through collaboration with local community participants.

Drawdown forecast

Most recent:

September 29, 2025 to October 13, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.2251.109-0.1162.90
Redpine Lake0.6070.522-0.0851.22
Nunikani Lake1.0000.884-0.1163.05
Hawk Lake2.0461.840-0.2064.42
Halls Lake1.6431.493-0.1502.59
Sherborne Lake0.1220.102-0.0201.52
Kushog Lake1.8141.545-0.2693.20
Percy Lake0.5880.367-0.2211.98
Haliburton Lake1.7341.541-0.1933.05
Redstone Lake1.7381.543-0.1953.66
Eagle Lake1.1711.039-0.1322.29
Maple Lake6.5186.520+/-0.15
Twelve Mile Lake1.1451.044-0.1011.98
Horseshoe Lake1.5001.478-0.0222.44
Big Bob Lake1.1040.947-0.1572.90
Little Bob Lake0.3330.023-0.3101.52
Gull Lake1.6631.551-0.1122.13
Moore Lake1.1801.154-0.0261.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.1411.127-0.0142.29
Canning Lake0.9210.791-0.1301.52
Miskwabi Lake1.2391.197-0.0422.29
Loon Lake0.6560.579-0.0771.98
Koshlong Lake1.1951.168-0.0272.29
Farquhar Lake1.8281.786-0.0423.05
Grace Lake0.9020.853-0.0492.06
Esson Lake1.3881.291-0.0973.05
Little Glamour Lake0.3700.3700.0001.83
Big Glamour Lake0.9830.724-0.2592.44
Gooderham Lake1.0560.956-0.1001.83
Contau Lake0.6420.576-0.0661.68
White Lake0.4130.275-0.1381.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.1571.003-0.1542.74
Anstruther Lake0.9190.853-0.0662.29
Mississagua Lake1.0680.902-0.1662.44
Eels Lake1.6401.434-0.2063.66
Jack Lake1.0630.979-0.0841.93
September 21, 2025 to October 05, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.2851.117-0.1682.90
Redpine Lake0.5680.524-0.0441.22
Nunikani Lake1.1950.842-0.3533.05
Hawk Lake2.1691.921-0.2484.42
Halls Lake1.7031.580-0.1232.59
Sherborne Lake0.2980.144-0.1541.52
Kushog Lake1.9541.631-0.3233.20
Percy Lake0.6990.492-0.2071.98
Haliburton Lake1.8391.649-0.1903.05
Redstone Lake1.8721.630-0.2423.66
Eagle Lake1.1651.068-0.0972.29
Maple Lake6.5136.485+/-0.15
Twelve Mile Lake1.1891.069-0.1201.98
Horseshoe Lake1.3811.277-0.1042.44
Big Bob Lake1.2260.934-0.2922.90
Little Bob Lake0.4990.234-0.2651.52
Gull Lake1.6701.565-0.1052.13
Moore Lake1.3221.154-0.1681.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.1540.958-0.1962.29
Canning Lake0.9560.825-0.1311.52
Miskwabi Lake1.2441.2520.0082.29
Loon Lake0.8530.621-0.2321.98
Koshlong Lake1.2401.151-0.0892.29
Farquhar Lake1.8251.8320.0073.05
Grace Lake0.9610.713-0.2482.06
Esson Lake1.5481.288-0.2603.05
Little Glamour Lake0.5040.215-0.2891.83
Big Glamour Lake1.1350.875-0.2602.44
Gooderham Lake1.0560.934-0.1221.83
Contau Lake0.8210.616-0.2051.68
White Lake0.5900.286-0.3041.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.2791.036-0.2432.74
Anstruther Lake0.9490.874-0.0752.29
Mississagua Lake1.1190.916-0.2032.44
Eels Lake1.7431.480-0.2633.66
Jack Lake1.0900.965-0.1251.93
September 15, 2025 to September 29, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.3341.198-0.1362.90
Redpine Lake0.6340.617-0.0171.22
Nunikani Lake1.2501.191-0.0593.05
Hawk Lake2.2952.044-0.2514.42
Halls Lake1.8031.598-0.2052.59
Sherborne Lake0.4230.039-0.3841.52
Kushog Lake2.0441.870-0.1743.20
Percy Lake0.7650.563-0.2021.98
Haliburton Lake1.9061.756-0.1503.05
Redstone Lake1.9501.725-0.2253.66
Eagle Lake1.2711.056-0.2152.29
Maple Lake6.5806.550+/-0.15-
Twelve Mile Lake1.2541.157-0.0971.98
Horseshoe Lake1.4561.393-0.0632.44
Big Bob Lake1.3781.141-0.2372.90
Little Bob Lake0.6010.375-0.2261.52
Gull Lake1.6211.536-0.0852.13
Moore Lake1.2271.154-0.0731.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.2141.130-0.0842.29
Canning Lake0.9741.0070.0331.52
Miskwabi Lake1.2621.251-0.0112.29
Loon Lake1.0550.831-0.2241.98
Koshlong Lake1.3251.098-0.2272.29
Farquhar Lake1.8491.820-0.0293.05
Grace Lake1.0340.919-0.1152.06
Esson Lake1.7051.462-0.2433.05
Little Glamour Lake0.6610.449-0.2121.83
Big Glamour Lake1.2671.007-0.2602.44
Gooderham Lake1.2030.950-0.2531.83
Contau Lake0.9980.792-0.2061.68
White Lake0.7910.560-0.2311.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.3791.166-0.2132.74
Anstruther Lake1.0100.908-0.1022.29
Mississagua Lake1.2030.994-0.2092.44
Eels Lake1.8491.634-0.2153.66
Jack Lake1.1201.070-0.0501.93
September 08, 2025 to September 22, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.4011.239-0.1622.90
Redpine Lake0.7060.548-0.1581.22
Nunikani Lake1.6701.164-0.5063.05
Hawk Lake2.5282.180-0.3484.42
Halls Lake1.8701.682-0.1882.59
Sherborne Lake0.5520.325-0.2271.52
Kushog Lake2.1461.958-0.1883.20
Percy Lake0.8880.679-0.2091.98
Haliburton Lake1.9601.918-0.0423.05
Redstone Lake2.0781.801-0.2773.66
Eagle Lake1.3981.162-0.2362.29
Maple Lake6.4646.497+/-0.15-
Twelve Mile Lake1.2661.139-0.1271.98
Horseshoe Lake1.5591.394-0.1652.44
Big Bob Lake1.5031.293-0.2102.90
Little Bob Lake0.7710.558-0.2131.52
Gull Lake1.6361.521-0.1152.13
Moore Lake1.1631.154-0.0091.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.2701.158-0.1122.29
Canning Lake0.9840.950-0.0341.52
Miskwabi Lake1.2921.228-0.0642.29
Loon Lake1.1760.971-0.2051.98
Koshlong Lake1.4231.283-0.1402.29
Farquhar Lake1.8771.758-0.1193.05
Grace Lake1.1810.946-0.2352.06
Esson Lake1.8561.597-0.2593.05
Little Glamour Lake0.8100.543-0.2671.83
Big Glamour Lake1.4341.171-0.2632.44
Gooderham Lake1.3221.125-0.1971.83
Contau Lake1.1230.909-0.2141.68
White Lake0.9250.706-0.2191.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.5501.275-0.2752.74
Anstruther Lake1.0890.939-0.1502.29
Mississagua Lake1.2981.124-0.1742.44
Eels Lake1.9891.715-0.2743.66
Jack Lake1.1531.054-0.0991.93
September 02, 2025 to September 16, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.4691.311-0.1582.90
Redpine Lake0.7200.635-0.0851.22
Nunikani Lake1.8801.580-0.3003.05
Hawk Lake2.6632.313-0.3504.42
Halls Lake1.8241.790-0.0342.59
Sherborne Lake0.5270.404-0.1221.52
Kushog Lake2.2032.058-0.1453.20
Percy Lake0.9740.801-0.1731.98
Haliburton Lake2.0841.965-0.1193.05
Redstone Lake2.1751.992-0.1833.66
Eagle Lake1.4451.276-0.1692.29
Maple Lake6.3696.425+/-0.15-
Twelve Mile Lake1.3691.252-0.1171.98
Horseshoe Lake1.6241.505-0.1192.44
Big Bob Lake1.5841.463-0.1212.90
Little Bob Lake0.8150.690-0.1251.52
Gull Lake1.7001.609-0.0912.13
Moore Lake1.3061.185-0.1221.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.3141.188-0.1262.29
Canning Lake0.9890.933-0.0561.52
Miskwabi Lake1.3281.248-0.0802.29
Loon Lake1.2231.120-0.1031.98
Koshlong Lake1.4711.363-0.1082.29
Farquhar Lake1.9351.804-0.1313.05
Grace Lake1.2141.078-0.1362.06
Esson Lake1.9561.745-0.2113.05
Little Glamour Lake0.9150.758-0.1571.83
Big Glamour Lake1.5071.301-0.2062.44
Gooderham Lake1.3111.255-0.0561.83
Contau Lake1.1811.083-0.0981.68
White Lake0.9930.827-0.1661.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.6811.479-0.2022.74
Anstruther Lake1.1221.059-0.0632.29
Mississagua Lake1.3541.138-0.2162.44
Eels Lake2.0841.878-0.2063.66
Jack Lake1.1641.078-0.0861.93
August 25, 2025 to September 08, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.5661.416-0.1502.90
Redpine Lake0.5710.550-0.0211.22
Nunikani Lake1.8301.460-0.3703.05
Hawk Lake2.8012.487-0.3144.42
Halls Lake1.9391.775-0.1642.59
Sherborne Lake0.5800.487-0.0931.52
Kushog Lake2.2652.107-0.1583.20
Percy Lake1.0210.868-0.1531.98
Haliburton Lake2.1172.000-0.1173.05
Redstone Lake2.2302.130-0.1003.66
Eagle Lake1.4401.384-0.0562.29
Maple Lake6.4576.418+/-0.15
Twelve Mile Lake1.3381.322-0.0161.98
Horseshoe Lake1.6661.587-0.0792.44
Big Bob Lake1.6211.531-0.0902.90
Little Bob Lake0.8450.758-0.0871.52
Gull Lake1.6931.685-0.0082.13
Moore Lake1.4261.233-0.1931.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.3721.232-0.1402.29
Canning Lake1.0060.978-0.0281.52
Miskwabi Lake1.4031.284-0.1192.29
Loon Lake1.3281.179-0.1491.98
Koshlong Lake1.5001.424-0.0762.29
Farquhar Lake1.9751.892-0.0833.05
Grace Lake1.2621.154-0.1082.06
Esson Lake2.0591.920-0.1393.05
Little Glamour Lake0.9590.859-0.1001.83
Big Glamour Lake1.6591.458-0.2012.44
Gooderham Lake1.2791.233-0.0461.83
Contau Lake1.1931.137-0.0561.68
White Lake1.0200.998-0.0221.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.7751.628-0.1472.74
Anstruther Lake1.1921.050-0.1422.29
Mississagua Lake1.4161.286-0.1302.44
Eels Lake2.2041.969-0.2353.66
Jack Lake1.2081.123-0.0851.93
August 18, 2025 to September 1, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.6641.436-0.2282.90
Redpine Lake0.6500.376-0.2741.22
Nunikani Lake1.9401.652-0.2883.05
Hawk Lake2.9272.675-0.2524.42
Halls Lake1.8851.643-0.2422.59
Sherborne Lake0.6000.495-0.1051.52
Kushog Lake2.3572.105-0.2523.20
Percy Lake1.1351.029-0.1061.98
Haliburton Lake2.1692.048-0.1213.05
Redstone Lake2.3402.133-0.2073.66
Eagle Lake1.4771.272-0.2052.29
Maple Lake6.5686.459+/-0.15
Twelve Mile Lake1.3751.219-0.1561.98
Horseshoe Lake1.6301.473-0.1572.44
Big Bob Lake1.6931.528-0.1652.90
Little Bob Lake0.8970.736-0.1611.52
Gull Lake1.7441.586-0.1582.13
Moore Lake1.2271.2330.0061.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.4741.349-0.1252.29
Canning Lake1.0330.904-0.1291.52
Miskwabi Lake1.4411.333-0.1082.29
Loon Lake1.3851.217-0.1681.98
Koshlong Lake1.5491.424-0.1252.29
Farquhar Lake2.0351.853-0.1823.05
Grace Lake1.3281.145-0.1832.06
Esson Lake2.1071.970-0.1373.05
Little Glamour Lake1.1160.818-0.2981.83
Big Glamour Lake1.7001.546-0.1542.44
Gooderham Lake1.3091.147-0.1621.83
Contau Lake1.1860.948-0.2381.68
White Lake1.0650.929-0.1361.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.8361.648-0.1882.74
Anstruther Lake1.2911.067-0.2242.29
Mississagua Lake1.4831.303-0.1802.44
Eels Lake2.3601.963-0.3973.66
Jack Lake1.2631.082-0.1811.93
August 11, 2025 to August 25, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.7721.615-0.1572.90
Redpine Lake0.8160.697-0.1191.22
Nunikani Lake2.0981.770-0.3283.05
Hawk Lake2.9862.697-0.2894.42
Halls Lake1.9281.868-0.0602.59
Sherborne Lake0.6520.547-0.1051.52
Kushog Lake2.4422.284-0.1583.20
Percy Lake1.1871.028-0.1591.98
Haliburton Lake2.2632.119-0.1443.05
Redstone Lake2.5172.282-0.2353.66
Eagle Lake1.5551.418-0.1372.29
Maple Lake6.5866.520+/-0.15
Twelve Mile Lake1.3351.278-0.0571.98
Horseshoe Lake1.5411.5810.0402.44
Big Bob Lake1.8461.610-0.2362.90
Little Bob Lake0.9270.837-0.0901.52
Gull Lake1.8011.722-0.0792.13
Moore Lake1.2691.233-0.0361.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.5401.441-0.0992.29
Canning Lake1.1031.003-0.1001.52
Miskwabi Lake1.5261.403-0.1232.29
Loon Lake1.4871.364-0.1231.98
Koshlong Lake1.6531.491-0.1622.29
Farquhar Lake2.1621.973-0.1893.05
Grace Lake1.4271.283-0.1442.06
Esson Lake2.2282.070-0.1583.05
Little Glamour Lake1.2071.030-0.1771.83
Big Glamour Lake1.7661.591-0.1752.44
Gooderham Lake1.4091.244-0.1651.83
Contau Lake1.2291.183-0.0461.68
White Lake1.1630.995-0.1681.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake1.9621.800-0.1622.74
Anstruther Lake1.4031.215-0.1882.29
Mississagua Lake1.5541.346-0.2082.44
Eels Lake2.5522.238-0.3143.66
Jack Lake1.3441.191-0.1531.93
August 05, 2025 to August 19, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake1.9371.639-0.2982.90
Redpine Lake0.7680.574-0.1941.22
Nunikani Lake2.1701.858-0.3123.05
Hawk Lake3.0712.819-0.2524.42
Halls Lake2.0781.992-0.0862.59
Sherborne Lake0.6970.585-0.1121.52
Kushog Lake2.5172.356-0.1613.20
Percy Lake1.2971.123-0.1741.98
Haliburton Lake2.3552.178-0.1773.05
Redstone Lake2.6402.365-0.2753.66
Eagle Lake1.6591.474-0.1852.29
Maple Lake6.5816.550+/-0.15
Twelve Mile Lake1.3671.3930.0261.98
Horseshoe Lake1.7141.537-0.1772.44
Big Bob Lake1.9901.813-0.1772.90
Little Bob Lake1.0650.887-0.1781.52
Gull Lake1.8921.784-0.1082.13
Moore Lake1.3001.246-0.0551.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.6221.493-0.1292.29
Canning Lake1.1461.051-0.0951.52
Miskwabi Lake1.6331.444-0.1892.29
Loon Lake1.5591.376-0.1831.98
Koshlong Lake1.7741.585-0.1892.29
Farquhar Lake2.3312.043-0.2883.05
Grace Lake1.4811.337-0.1442.06
Esson Lake2.2862.175-0.1113.05
Little Glamour Lake1.2431.196-0.0471.83
Big Glamour Lake1.8251.702-0.1232.44
Gooderham Lake1.4761.365-0.1111.83
Contau Lake1.2741.216-0.0581.68
White Lake1.2091.129-0.0801.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.0641.865-0.1992.74
Anstruther Lake1.5241.299-0.2252.29
Mississagua Lake1.6511.487-0.1642.44
Eels Lake2.7202.312-0.4083.66
Jack Lake1.4241.244-0.1801.93
July 28, 2025 to August 11, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake2.0961.888-0.2082.90
Redpine Lake0.8900.675-0.2151.22
Nunikani Lake2.3502.115-0.2353.05
Hawk Lake3.3013.025-0.2764.42
Halls Lake2.2392.004-0.2352.59
Sherborne Lake0.7200.580-0.1401.52
Kushog Lake2.6312.499-0.1323.20
Percy Lake1.4321.276-0.1561.98
Haliburton Lake2.4952.322-0.1733.05
Redstone Lake2.8112.624-0.1873.66
Eagle Lake1.7901.636-0.1542.29
Maple Lake6.6186.554+/-0.15
Twelve Mile Lake1.4611.455-0.0061.98
Horseshoe Lake1.8161.802-0.0142.44
Big Bob Lake2.1571.947-0.2102.90
Little Bob Lake1.1111.042-0.0691.52
Gull Lake1.9671.858-0.1092.13
Moore Lake1.4031.307-0.0971.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.8071.611-0.1962.29
Canning Lake1.2071.116-0.0911.52
Miskwabi Lake1.7441.616-0.1282.29
Loon Lake1.6701.549-0.1211.98
Koshlong Lake1.8351.729-0.1062.29
Farquhar Lake2.4552.308-0.1473.05
Grace Lake1.6021.441-0.1612.06
Esson Lake2.4442.233-0.2113.05
Little Glamour Lake1.3851.227-0.1581.83
Big Glamour Lake1.9901.780-0.2102.44
Gooderham Lake1.5021.436-0.0661.83
Contau Lake1.3871.255-0.1321.68
White Lake1.3421.165-0.1771.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.1962.019-0.1772.74
Anstruther Lake1.6831.458-0.2252.29
Mississagua Lake1.8201.613-0.2072.44
Eels Lake2.9532.636-0.3173.66
Jack Lake1.5501.387-0.1631.93
July 21, 2025 to August 04, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake2.2251.972-0.2532.90
Redpine Lake0.9970.782-0.2151.22
Nunikani Lake2.5602.241-0.3193.05
Hawk Lake3.5283.082-0.4464.42
Halls Lake2.2892.082-0.2072.59
Sherborne Lake0.8000.660-0.1401.52
Kushog Lake2.7762.525-0.2513.20
Percy Lake1.5771.284-0.2931.98
Haliburton Lake2.6102.369-0.2413.05
Redstone Lake2.9342.682-0.2523.66
Eagle Lake1.9031.680-0.2232.29
Maple Lake6.6416.597+/-0.15
Twelve Mile Lake1.6121.477-0.1351.98
Horseshoe Lake1.9881.776-0.2122.44
Big Bob Lake2.3172.082-0.2352.90
Little Bob Lake1.2140.978-0.2361.52
Gull Lake1.9531.842-0.1112.13
Moore Lake1.4591.349-0.1101.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.9071.684-0.2232.29
Canning Lake1.2931.149-0.1441.52
Miskwabi Lake1.8121.653-0.1592.29
Loon Lake1.7071.628-0.0791.98
Koshlong Lake1.9131.775-0.1382.29
Farquhar Lake2.5482.387-0.1613.05
Grace Lake1.6951.563-0.1322.06
Esson Lake2.6072.396-0.2113.05
Little Glamour Lake1.4381.384-0.0541.83
Big Glamour Lake2.1551.888-0.2672.44
Gooderham Lake1.6431.441-0.2021.83
Contau Lake1.4281.360-0.0681.68
White Lake1.4071.329-0.0781.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.3012.116-0.1852.74
Anstruther Lake1.8111.626-0.1852.29
Mississagua Lake1.9661.752-0.2142.44
Eels Lake3.1302.801-0.3293.66
Jack Lake1.6801.440-0.2401.93
July 14, 2025 to July 28, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake2.3862.079-0.3072.90
Redpine Lake0.9440.9450.0011.22
Nunikani Lake2.5402.303-0.2373.05
Hawk Lake3.7543.356-0.3984.42
Halls Lake2.3452.188-0.1572.59
Sherborne Lake0.9850.915-0.0701.52
Kushog Lake2.8422.687-0.1553.20
Percy Lake1.6301.456-0.1741.98
Haliburton Lake2.6692.522-0.1473.05
Redstone Lake3.1212.803-0.3183.66
Eagle Lake1.9541.823-0.1312.29
Maple Lake6.5976.553+/-0.15
Twelve Mile Lake1.7161.533-0.1831.98
Horseshoe Lake2.0691.878-0.1912.44
Big Bob Lake2.4212.212-0.2092.90
Little Bob Lake1.3281.137-0.1911.52
Gull Lake1.9641.854-0.1102.13
Moore Lake1.4061.349-0.0571.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake1.9541.813-0.1412.29
Canning Lake1.3051.232-0.0731.52
Miskwabi Lake1.9221.725-0.1972.29
Loon Lake1.7411.674-0.0671.98
Koshlong Lake2.0111.816-0.1952.29
Farquhar Lake2.6072.443-0.1643.05
Grace Lake1.6881.627-0.0612.06
Esson Lake2.7282.509-0.2193.05
Little Glamour Lake1.5861.370-0.2161.83
Big Glamour Lake2.2612.074-0.1872.44
Gooderham Lake1.6211.6250.0041.83
Contau Lake1.4611.363-0.0981.68
White Lake1.4951.312-0.1831.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.3892.231-0.1582.74
Anstruther Lake1.9221.759-0.1632.29
Mississagua Lake2.0381.839-0.1992.44
Eels Lake3.2602.996-0.2643.66
Jack Lake1.7901.577-0.2131.93
July 06, 2025 to July 20, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake2.5492.264-0.2852.90
Redpine Lake1.0430.772-0.2711.22
Nunikani Lake2.6902.426-0.2643.05
Hawk Lake3.9513.621-0.3304.42
Halls Lake2.3912.309-0.0822.59
Sherborne Lake1.0771.063-0.0141.52
Kushog Lake2.8712.807-0.0643.20
Percy Lake1.7571.554-0.2031.98
Haliburton Lake2.7652.610-0.1553.05
Redstone Lake3.2213.011-0.2103.66
Eagle Lake2.0341.914-0.1202.29
Maple Lake6.5886.499+/-0.20
Twelve Mile Lake1.7511.704-0.0471.98
Horseshoe Lake2.1472.075-0.0722.44
Big Bob Lake2.5612.275-0.2862.90
Little Bob Lake1.3621.174-0.1881.52
Gull Lake2.0671.993-0.0742.13
Moore Lake1.4081.398-0.0101.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake2.0661.983-0.0832.29
Canning Lake1.3611.341-0.0201.52
Miskwabi Lake2.0121.951-0.0612.29
Loon Lake1.8441.739-0.1051.98
Koshlong Lake2.1061.942-0.1642.29
Farquhar Lake2.8172.669-0.1483.05
Grace Lake1.8751.707-0.1682.06
Esson Lake2.8402.698-0.1423.05
Little Glamour Lake1.7291.572-0.1571.83
Big Glamour Lake2.3022.179-0.1232.44
Gooderham Lake1.6171.602-0.0151.83
Contau Lake1.4991.4990.0001.68
White Lake1.5761.494-0.0821.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.4652.363-0.1022.74
Anstruther Lake2.0231.855-0.1682.29
Mississagua Lake2.1421.951-0.1912.44
Eels Lake3.3743.194-0.1803.66
Jack Lake1.8401.805-0.0351.93
June 30, 2025 to July 14, 2025
Gull River Watershed
Lake NameStart date
Water level (m)
End date (target)
Water level (m)
Target differential
metres (m)
Full level
metres (m)
Kennisis Lake2.6382.424-0.2142.90
Redpine Lake1.0790.997-0.0821.22
Nunikani Lake2.7552.611-0.1443.05
Hawk Lake4.1313.784-0.3474.42
Halls Lake2.4522.271-0.1812.59
Sherborne Lake1.2351.165-0.0701.52
Kushog Lake2.9782.795-0.1833.20
Percy Lake1.8701.690-0.1801.98
Haliburton Lake2.8442.713-0.1313.05
Redstone Lake3.3253.084-0.2413.66
Eagle Lake2.0831.918-0.1652.29
Maple Lake6.6036.567+/-0.15
Twelve Mile Lake1.8291.771-0.0581.98
Horseshoe Lake2.2932.168-0.1252.44
Big Bob Lake2.7262.413-0.3132.90
Little Bob Lake1.3741.351-0.0231.52
Gull Lake2.0362.024-0.0122.13
Moore Lake1.5431.422-0.1211.52
Burnt River Watershed
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Drag Lake2.1122.000-0.1122.29
Canning Lake1.3871.312-0.0751.52
Miskwabi Lake2.1241.924-0.2002.29
Loon Lake1.9131.769-0.1441.98
Koshlong Lake2.2292.032-0.1972.29
Farquhar Lake2.8902.736-0.1543.05
Grace Lake1.9741.772-0.2022.06
Esson Lake2.8842.789-0.0953.05
Little Glamour Lake1.7531.7570.0041.83
Big Glamour Lake2.3072.277-0.0302.44
Gooderham Lake1.7751.601-0.1741.83
Contau Lake1.5731.462-0.1111.68
White Lake1.7051.533-0.1721.83
Others
LakeStart Date
Water Level (m)
End Date (Target)
Water Level (m)
Target Differential
metres (m)
Full Level
metres (m)
Crystal Lake2.5262.418-0.1082.74
Anstruther Lake2.1121.947-0.1652.29
Mississagua Lake2.2442.046-0.1982.44
Eels Lake3.4363.270-0.1663.66
Jack Lake1.8581.771-0.0871.93

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