Read more: San Pedro River in Southern Arizona
The settlement agreement filed Monday between the Bureau of Land Management and three enviromental groups that sued over livestock grazing in …
Federal officials declared the Arizona eryngo, a rare wildflower, an endangered species and designated nearly 13 acres in Pima and Cochise counties as critical habitat.
Developer's lawyer wants hearing to rebut charges about Benson projectFor Star subscribers: "Donations and political meetings occur all the time," says attorney for developer of big Benson housing project, rejecting a congressional committee's allegations of an illegal “quid pro quo” between senior Trump administration officials and the developer.
For Star subscribers: Conservation group Wildlands Network says in new report that the border wall in Arizona needs immediate remediation in sensitive areas to avoid serious public safety issues and damage to native wildlife.
Environmental groups asked a federal judge Tuesday to order the federal government and the Army to take another look at how Fort Huachuca is affecting the San Pedro River.
An endangered plant has all but disappeared from the San Pedro Riparian National Conservation Area, according to a Tucson-based environmental …
Arizona environmentalists have followed through on their threat to sue the federal government over stray cows in the San Pedro Riparian National Conservation Area.
For Star subscribers: After widespread damage, efforts to keep cattle away from sensitive rivers in Arizona and New Mexico are ramping up.
The release of a "nuisance animal" that was transplanted from Oak Creek southwest of Sedona has raised the beaver population on Southern Arizona's San Pedro River by one.
U.S. designates several Southern Arizona watersheds as critical habitat for the threatened western yellow-billed cuckoo and the northern Mexican gartersnake.
A Tucson-based environmental group says the dam-building rodents are doing better than previously thought on the federally protected river southeast of Tucson.
A rare plant only found on Tucson's east side and along the San Pedro River near Sierra Vista will soon be added to the endangered species list.
Federal officials rectified an oversight in border wall construction on Tuesday after a sharp-eyed wildlife advocate noticed the gates in the wall across the San Pedro River were welded shut.
