Cucamonga Creek Stream Gage Replacement Project

The Cucamonga Creek Stream Gage Replacement Project, sponsored by the Cucamonga Valley Water District and approved by the California Department of Water Resources Northern Region Office, involves the replacement of an existing stream gage adjacent to Cucamonga Creek in Rancho Cucamonga, California. The project aims to replace a large, inaccessible concrete structure with a new stream gauge featuring a significantly smaller footprint in a nearby location. This new system will be used to record and monitor stream flows, utilizing small equipment for the installation process. The project is classified under NAICS code 237990 and is associated with schedule number 2025061134. According to the Notice of Exemption dated August 15, 2025, the project qualifies for categorical exemptions 15303 and 15306, as it involves the construction of small structures and information collection with no significant environmental impact expected. Primary administrative contact is Brian Humphrey, Senior Environmental Scientist, and the project sponsor contact is Tuan Truong.