Alamo Lake Information
provided by the US Army Corps of Engineers

http://www.spl.usace.army.mil/cgi-bin/cgiwrap/zinger/slProjReport.cgi?almoData.in

Lake Pleasant
provided by the Central Arizona Project (CAP)

http://www.cap-az.com/Operations/LakePleasantOps.aspx

US Bureau of Reclamation
Lower Colorado River Operations, provides information from the Colorado River Reservoirs - Powell, Mead, Mohave and Havasu and Dam Releases

http://www.usbr.gov/lc/riverops.html

US Geologic Survey
Statewide real time data on rivers and streams in a tabular layout including San Carlos Reservoir elevation

http://waterdata.usgs.gov/az/nwis/current/?type=flow

Salt River Project (SRP)
Daily water reports providing information for the Salt and Verde River systems, including the following reservoirs: Roosevelt, Apache, Canyon, Saguaro, Horseshoe and Bartlett

http://www.srpwater.com/dwr/

http://www.watershedmonitor.com/default.aspx