This mandatory approximately 1,052-acre regional* stormwater retention facility is located on the northwest side of the City of Roseville.
Roseville acquired the property in 2004 as a critical way to reduce flood risk in the watershed.
These basins have been long anticipated in coordination with other long-range development that has taken shape over the past decades. Visit
roseville.ca.us/DevelopmentDecoded to learn more about Roseville's approach to comprehensive planning.
Retention basins are necessary and exist around Roseville and throughout the region. In fact, you may have seen these types of facilities and not even realized the essential role they play in flood protection. See the photo example below.
During storms, water will be diverted from Pleasant Grove Creek and University Creek, and their tributaries, into north and south flood basins. Stormwater will be retained in these two basins until high water flows are reduced. Stored water will then be discharged into Pleasant Grove Creek.
The basins will have the appropriate capacity to mitigate for City of Roseville development, and potentially select developments within Placer County (*via Memorandum of Understanding, currently in process).
The project is also envisioned to provide enhanced riparian, wetland, and upland habitats, as well as passive recreation areas.
The project reflects Roseville’s commitment to long-range planning and responsible growth over the last 35+ years. The civic improvements play an important role in meeting Roseville’s public safety, environmental, and community service goals.
Learn more about other City projects in the vicinity.
The project area is shown in light blue on the map below.
Learn more about other long-planned projects in the area.
A community open house and public scoping meeting was held from 5 - 7 p.m. on
Tuesday, Oct. 22, 2024 at Riley Library. Approximately 30 people were in attendance.
The public had an opportunity to learn about the planned facility, ask questions, and provide feedback on the project’s scope as the environmental study phase begins.
Watch and learn about environmental studies.
If you weren't able to attend the first open house, check out the meeting exhibits below.
View the
Meeting Summary.
A program-level Environmental Impact Report (EIR) based on the conceptual design was certified in 2003 (State Clearinghouse No. 2002072084). Now that the City has more detail about the needs and scope of the project, it is now preparing a Subsequent EIR (SEIR). An SEIR is prepared when information from a certified EIR is still relevant and provides informational value, but there have been substantial changes to the project or circumstances under which the project is undertaken, or if there is new information that was not known at the time the EIR was completed, which would require major revisions to the EIR.
The City has kicked off the preparation of the SEIR and is now seeking public input on the project and environmental concerns. A
Notice of Preparation (NOP) containing additional project information was published. A public meeting to discuss the project and scope of the SEIR has been scheduled on October 22, 2024 from 5 to 7 p.m. at the Martha Riley Library located at 1501 Pleasant Grove Boulevard. Comments on the SEIR are being accepted until November 1, 2024. See the NOP for additional information.
View City environmental documents.
Learn more about environmental studies:
The total project cost is estimated at $79 million.
Since 1991, the City has been
collecting fees on building permits within the watershed to help fund construction.
* Should the basin become a regional facility, Placer County will collect fees from County-issued building permits to fund increased stormwater capacity.
Additionally, grant funding is contributing to the project.
Design and permitting: began spring 2024
Design alternatives analysis: summer 2024 - spring 2025
Open house and scoping meeting: October 22, 2024
Draft Subsequent Environmental Impact Report (SEIR): fall 2024 - spring 2025
Public hearing for Draft SEIR: spring 2025
60% design: summer 2025 - winter 2025
Permitting: fall 2025 - spring 2026
100% design: winter 2026 - spring 2026
Construction: timing depends on funding
Schedule subject to change
Stay informed about this project and other important Public Works news, subscribe to
email updates.
Also, follow the City of Roseville on
social media.
For questions about the project,
email us or call (916) 746-1300.