Beavers also raise the water table. I heard or read somewhere that it's partially because the sheer weight of the water behind the dams. This study found an increase of about one foot in the water table following relocation of 69 beaver in Washington State:

We evaluated changes in temperature and water storage following the relocation of 69 beaver into 13 headwater stream reaches of the Skykomish River watershed within the Snohomish River basin, Washington, USA. We evaluated how beaver dams affected surface and groundwater storage and stream temperature. Successful relocations created 243 m3 of surface water storage per 100 m of stream in the first year following relocation. Dams raised water table elevations by up to 0.33 m and stored approximately 2.4 times as much groundwater as surface water per relocation reach.

https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecs2...