Washington Revised Code Title 90. Water Rights--Environment § 90.44.250. Investigations--Reports of appropriators

The department is hereby authorized to make such investigations as may be necessary to determine the location, extent, depth, volume, and flow of all groundwaters within the state and in making such examination, hereby is authorized and directed to cooperate with the federal government, with any county or municipal corporation, or any person, firm, association or corporation, and upon such terms as may seem appropriate to it.

In connection with such investigation, the department from time to time may require reports from each groundwater appropriator as to the amount of public groundwater being withdrawn and as to the manner and extent of the beneficial use. Such reports shall be in a form prescribed by the department.