Invasive species in Arizona alter ecosystem balance and reduce ... It was introduced for erosion control and ornamental purposes, but its rapid growth displaced native vegetation.

WILLCOX, Ariz. (AP) — A four-mile stretch of highway south of Willcox in rural Cochise County remained closed Thursday due to soil erosion that the state Department of Transportation attributed ...

and its twin city in Arizona. Erosion was releasing fine particle dust into the air, resulting in human health problems; flooding was endangering people; and heavy sediment loads were causing ...

FLAGSTAFF, Ariz. (AP) - Burn maps from a northern Arizona fire have revealed a risk for post-fire erosion and flooding in populated communities. The Arizona Daily Sun reports that the U.S. Forest ...

The closure, which began Monday afternoon, is to allow Arizona Department of Transportation work crews to repair soil erosion under the roadway, the Arizona Department of Transportation said.