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Notice of planned maintenance to underlying USGS network September 24-26, 2021: During this maintenance period users may experience intermittent periods of inaccessibility or delayed delivery of hydrologic data to the USGS National Water Information System (NWIS). Please email firstname.lastname@example.org with any concerns regarding impacts to data delivery.
Welcome to the NWIS-Web for the Arizona Water
The majority of USGS Gaging Stations are funded though a cooperative
program between the USGS other interested agencies.
Follow this link for information on the Cooperative Water Program with