FLOOD-MAR NETWORK

California’s Living
Flood-MAR
Collaboration Hub

Connecting people, sharing knowledge, and accelerating the partnerships needed to put floodwaters to work for groundwater recharge across California.

Recharge projects across California

Guidance, research, tools and data

Webinars, workshops, tours, Forums

Join the Network or an Action Team

WELCOME TO THE FLOOD-MAR HUB

Putting floodwaters to work for California’s groundwater

Flood-MAR (Flood-Managed Aquifer Recharge) uses excess water from highflow events to replenish groundwater supplies by directing it onto suitable agricultural lands, working landscapes, and managed natural areas where it can safely infiltrate into aquifers.

This approach can help California reduce flood risk, improve water supply reliability, support ecosystems and agriculture, and build resilience to climate change. Because these benefits span communities, landscapes, and sectors, advancing Flood-MAR requires strong partnerships and collaboration across
California.

That’s where the Flood-MAR Network comes in: connecting people, sharing knowledge, and accelerating the partnerships needed to advance Flood-MAR across the state.

WHAT'S NEW

Latest from the Network

Member Event

State Water Boards: Capturing Floodflows Without a Permit

The State Water Resources Control Board’s Division of Water Rights will host two virtual public workshops to share information and answer questions about temporary water-right permits for groundwater recharge and...

Lunch-MAR Event

Lunch-MAR: Proof Positive: A Century of Managed Aquifer Recharge in Southern California

Join Betsy Miller to learn how the San Bernardino Valley Water Conservation District drew on 112 years of continuous recharge data to isolate the basin-scale effects of its operations, offering...

Member Event

Water Plan Advisory Committee Meeting #3

Part of the ongoing development of the California Water Plan 2028, focusing on implementation of Senate Bill 72, water supply targets, and regional economic/watershed evaluations.

FEATURED PROJECT · CASE STUDY

On-Farm Recharge Pilot Case Studies in the Turlock Irrigation District Area

Three almond growers in the Turlock Irrigation District put on-farm recharge into action—collectively recharging more than 80 acre-feet of water across 67.5 acres. These case studies offer a practical look at site conditions, field infrastructure, labor needs, costs, and lessons from real-world recharge events in Stanislaus and Merced counties.

FEATURED RESOURCE · GUIDANCE

On-Farm Recharge Methods Manual: A Summary of Strategies and Challenges

Sustainable Conservation’s On-Farm Recharge Methods Manual brings together more than a decade of grower experience to help plan and implement groundwater recharge on agricultural lands. It covers site suitability, crop health, water quality, field preparation, recharge methods, costs, and incentives, with 23 case studies illustrating practical strategies and challenges.

Flood-MAR Network Virtual Workshop: A New Era in California Water Planning

California’s water-planning landscape is evolving, creating new opportunities to integrate groundwater recharge and Flood-MAR into statewide planning. In this interactive workshop we heard directly from DWR about how the California Water Plan is evolving, looked at how Senate Bill 659 is advancing recharge within the Plan, and received updates on emerging programs, technical assistance, and funding opportunities.