Grand lac de Laffrey
45°0′40″N 5°46′40″E / 45.01111°N 5.77778°E / 45.01111; 5.77778Primary outflows Laffrey Basin countries France Max. length 3 km (1.9 mi) Max. width 0.5 km (0.31 mi) Surface area 120 ha (300 acres) Average depth 39 m (128 ft) Surface elevation 911 m (2,989 ft)
The Grand lac de Laffrey (Great Laffrey lake) is the largest of the Laffrey lakes, located in Matheysine 23 km south of Grenoble, in the Isère département of France.
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