| Shadow Lake | |
| Location: | Kawartha Lakes, Ontario |
| Group: | Kawartha Lakes |
| Type: | lake |
| Part Of: | Lake Ontario drainage basin |
| Inflow: | Gull River |
| Outflow: | Gull River |
| Basin Countries: | Canada |
| Max-Depth: | [1] |
| Residence Time: | 15 days[2] |
| Elevation: | [3] |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Alt: | Map of Southern Ontario with location of Shadow Lake shown with a dot |
| Pushpin Map Caption: | Location in Southern Ontario |
Shadow Lake is a lake in the city of Kawartha Lakes in Central Ontario, Canada.[4] [5] [6] [7] With an area of and an elevation of, it is the second lake upstream of the mouth of the Gull River, and is in the Lake Ontario drainage basin.
Shadow Lake has an area of and lies at an elevation of . The maximum depth of the lake is .
The primary inflow is the Gull River, at the northwest and arriving from the community of Norland, which accounts for 98% of the 786e6m3 inflow into the lake. There are three unnamed secondary inflows. The primary outflow, at the south, is also the Gull River, which flows south through two rapids, known locally as "the chute", to Silver Lake.[8] It continues to the mouth of the Gull River at Balsam Lake, and then via the main Kawartha Lakes chain, the Otonabee River and the Trent River to the Bay of Quinte on Lake Ontario.
Boating is possible upstream to a dam at Norland; and downstream through Silver Lake to a dam at the community of Coboconk, though low and high water flow situations can make the latter passage hazardous.