Proposition 1 Storm Water Grant Program

Portal ID:
Closed (67 total applications submitted)
Opportunity Type:
  • Grant
Last Updated:



The Proposition 1 Storm Water Grant Program funds multi-benefit storm water management projects, such as: green infrastructure, rainwater and storm water capture projects, and storm water treatment facilities.

This "Round 2" solicitation is for implementation projects only (no planning grants).


Instead of being viewed as a resource, storm water and dry weather runoff has historically been seen as a problem that must be moved to the ocean as quickly as possible or as a source of contamination, contributing to the loss of usable water supplies and the pollution and impairment of rivers, lakes, streams, and coastal waters.  Eligible Projects are those that capture, treat, infiltrate and/or use storm water/dry weather runoff for a variety of potential benefits, including (but not limited to): Water Supply, Water Quality, Flood Protection, Environmental, Community.

To be eligible for funding, projects must be listed in a Storm Water Resource Plan that the State Water Board has concurred with. Note: Projects benefiting a Disadvantaged Community (DAC) with a population of 20,000 or less that is not a co-permittee for an storm water permit issued to a municipality with a population of more than 20,000, and/or (2)projects that are in an Area of Special Biological Significance (ASBS) and are covered under an approved ASBS Compliance Plan, are exempt from this requirement. Exempt projects still must be submitted to the local Integrated Regional Water Management (IRWM) group for incorporation into an adopted IRWM Plan.


Eligibility Requirements

Eligible Applicants:

  • Nonprofit
  • Public Agency
  • Tribal Government

Eligible Applicants include: Public Agencies/Utilities, 501(c)(3) Non-Profit Organizations, Mutual Water Companies, State and Federally Recognized Tribes.

Eligible Geographies:


Matching Funding Requirement:

In general, there is a 50% match requirement based on the Total Project Cost. The required match may be reduced for projects located in and benefitting a Disadvantaged Community or Economically Distressed Area (See Table 2 of the Guidelines). Requests for Match Reduction must include the information requested in Appendix A of the Guidelines.

Important Dates

The date (and time, where applicable) by which all applications must be submitted to the grantmaker. Time listed as “00:00” equates to midnight.
The date on which the grantor expects to announce the recipient(s) of the grant.
Fall 2020
The length of time during which the grant money must be utilized.
3 years

Funding Details

The total projected dollar amount of the grant.
A single grant opportunity may represent one or many awards. Some grantors may know in advance the exact number of awards to be given. Others may indicate a range. Some may wish to and wait until the application period closes before determining how many awards to offer; in this case, a value of “Dependent” will display.
Grant opportunities representing multiple awards may offer awards in the same amount or in varied amounts. Some may wish to wait until the application period closes before determining per-award amounts; in this case, a value of “Dependent” will display.
$250,000 – $10,000,000
Certain grants require that the recipient(s) provide a letter of intent.
Yes ( see Description for details )
Certain grants require that the recipient(s) be able to fully or partially match the grant award amount with another funding source.
The funding source allocated to fund the grant. It may be either State or Federal (or a combination of both), and be tied to a specific piece of legislation, a proposition, or a bond number.
  • State

Funding Source Notes:

Proposition 1

The manner in which the grant funding will be delivered to the awardee. Funding methods include reimbursements (where the recipient spends out-of-pocket and is reimbursed by the grantor) and advances (where the recipient spends received grant funds directly).
  • Reimbursement(s)

Funding Method Notes:

Typically invoices are submitted quarterly based on incurred costs (no advance funds).

How to Apply

State agencies/departments recommend you read the full grant guidelines before applying.


For questions about this grant, contact:
Daman Badyal, 1-916-319-9436,