The Columbia Water Center in its attempt to construct AWASH has encountered many limitations due to a lack of data. This lead to the systematic exploration of websites that disclose state water data to understand how the lack of data at the federal level could be filled by aggregating state-level information. The result of the systematic review of the 48 states of conterminous US are disclosed in the following table.

This work is the object of a publication available here.

Should you wish to contribute to this effort by augmenting the database or fixing broken links, please contact us using the following form.

Category of water data (choose all that apply)