Flood in Pima County, Arizona

Heavy rain of two to four inches occurred the previous afternoon on Tucson's west side near Ajo Way and Kinney Road and directly over the Brawley Wash just west of Sandario Road. In addition, two to three inches of rain fell in the Sierrita Mountains west of Green Valley. By the time the runoff from the Sierrita Mountains reached the west side of Tucson many hours later, Brawley Wash overflowed its banks. During the overnight hours, five vehicles drove into the flood waters and became stranded along Manville Road just west of Sandario Road. Around 2 am, one man escaped his vehicle before it was washed downstream only to be swept several yards away himself. He suffered a leg injury. His vehicle was found 200 yards downstream, upside down. The man's wife was found in the vehicle, drown. Rain redeveloped around daybreak allowing flood conditions to persist through mid morning.

Several rivers running through the Tucson Metro Area flooded on July 31, 2006. The Rillito River flooded with water over the cement banks near Dodge Boulevard. Additionally, the Rillito River was over bankfull just east of the Swan Road Bridge. River Road near La Cholla Road was flooding from the Rillito River. Sabino Creek was out of its banks and houses were flooded near Sabino Canyon and Bear Canyon. Below is a listing of some of the damage, but not all, caused by the flooding and an estimate for the cost of repairs:Sabino Canyon Recreation area road and facility damaged, $100,000Forty homes and businesses flooded, $1,200,000One home destroyed due to flooding, $150,000Water main broke near the Mt. Lemmon highway, $20,000Catalina Highway road washed away, $50,000Agricultural irrigation system damaged, $500,000Cement plant flooded, $400,000Gravel pit flooded, $30,000General infrastructure damage, $500,000

Widespread heavy rain of 2 to 4 inches with isolated amounts of 5 to 8 inches fell mainly from the evening of October 1st through the morning hours of October 2nd. Runoff from this rainfall continued through the night of the 2nd, with the peak flows generally during the afternoon. Several roads, including Indian Routes 1, 15, 21, 23, 34, and 45, as well as sections of Highway 86 became, or continued to be, impassable on the Tohono O'odham Nation. Several of these roads sustained significant damage. Homes that were flooded earlier in the morning from flash flooding remained flooded or saw water levels rise. Additional homes were flooded by continued runoff during the afternoon. At least 50 homes were flooded in the following districts: Gu Vo (11); Pisinemo (17); Sif Oidak (20); and Hickiwan (2). Several dozen residents were evacuated from their homes. At least 20 earthen dams and levees were damaged along with the tribal water and utility system infrastructure. Runoff nearly filled Menagers Lake, prompting fears of a dam failure and the evacuation of the village of Ali Chugk.