Gridley is a city located in Butte County, California. The climate in Gridley is Mediterranean, with hot and dry summers and mild winters. The area is known for its agriculture, with rice being a significant crop. As a result, hydrology constituents include irrigation runoff and agricultural chemicals. However, the city has a water treatment plant that provides clean drinking water to its residents. Outdoor recreation opportunities in Gridley include hiking and birdwatching at the Gray Lodge Wildlife Area, fishing at the Feather River, and golfing at the Tuscan Ridge Golf Club.