Torrgårdsvatten is a lake in Lilla Edet Municipality in the province of Bohuslän and is part of the main catchment area of the Göta River.

[1]Torrgårdsvatten is part of the sub-basin (644465–128394) that SMHI calls Ovan VDRID = Gårdaån i Göta älvs vattendragsyta.

In connection with the Berg Collegiate's survey in 1748 (description for the map in 1750), it emerged that the damming of the lake had caused a minor inconvenience for Yttre Åsen, a small meadow had been damaged.

Peterson and J.P. Wedelin, work was undertaken to raise the water level at Torrgårdsvatten by damming the outlet to Rödvatten.

For this reason, the surveyor Carl S. Jung was called in to map the lake when the ice had settled in January 1842 (the water level was then 1.2 meters below the upper edge of the dam).

The flooded area was "cultivated forest land on bedrock and partly of marshes and seagulls with some smaller grass slopes to Yttre Åsen".

On June 9, 1842, the decision was made in which the previous agreements with Svenseröd and Yttre Åsen were declared reasonable while the demands of Röd were rejected.