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About STR

The Save the Rain Program is Onondaga County’s award-winning initiative to improve the water quality of Onondaga Lake and its tributaries.

To date, the County has advanced more than 200 distinct green infrastructure projects on public and private property. Onondaga County is a national model for the implementation of a balanced approach to stormwater management – a combination of smart gray investments with innovative green infrastructure solutions. Onondaga Lake has seen tremendous improvement in water quality and the ecosystem is thriving!

The Save the Rain program started as a comprehensive stormwater management plan intended to reduce the amount of pollution that flows into Onondaga Lake and its tributaries, and is quickly becoming a way of life in Onondaga County. During wet weather events, stormwater flows into the local combined stormwater & sewer system, causing heavy flow periods that can overload the system. During times of stormwater overload, the existing combined sewer system is designed to release the combined sanitary flow and stormwater into local tributaries, including Harbor Brook and Onondaga Creek—both of which flow into Onondaga Lake. Such an event is known as a Combined Sewer Overflow (CSO). When certain combined stormwater & sewer systems overflow during major storm events, the water quality in each local tributary as well as Onondaga Lake is impacted. (Click here for a map of the local impacted sewersheds and CSO locations). Syracuse is one of about 770 communities in the nation with a combined sewer system.

Onondaga lake



Swimming declared unsafe


Fishing banned.


Amended Consent Judgement (ACJ) requires Onondaga County to perform a series of engineering and scientific studies to upgrade the treatment of Combined Sewer Overflows (CSOs).


ACJ was designed to improve the water quality of the lake and achieve state and federal law regulations by December 1, 2012.


The revised ACJ plan was approved by the Court.


Onondaga County named EPAS Green Infrastructure Partner Community (April). “Project 50” goal exceeded, advancing 60 projects in the year (December).


US Water Prize. Onondaga County and EPA Cohost Community Summit on Green Infrastructure. NYS Environmental Excellence Award. Met major milestones - 2 storage facilities operational.


Onondaga Lake west shore trail extension opened.


In 1989, a Consent Judgment was reached, settling litigation between New York State, the Atlantic States Legal Foundation, and Onondaga County in connection with alleged violations of state and federal water pollution control laws. Its conditions required the County to perform a series of engineering and scientific studies to evaluate the need for upgrading the Metropolitan Sewage Treatment Plant (Metro) and for providing treatment of the combined sewer overflows (CSOs) that occur in the Metro service area. Based on the results of those studies and in consultation with the State Department of Environmental Conservation (NYSDEC) and the U.S. Environmental Protection Agency (USEPA), the County established a framework for upgrading Metro and addressing the CSOs. The result was the execution of the Amended Consent Judgment (ACJ) which was signed in January 1998 by all the parties: NYSDEC, the State Attorney General, ASLF, and the County. For more information regarding the ACJ and a copy of the agreement, please visit:


The 1998 ACJ focused on conventional grey infrastructure improvements including:

  • Improving and upgrading of the County’s main sewage treatment plant (Metro)

  • Eliminating and/or decreasing the effects of the combined sewer overflows on the lake and its tributaries

  • Designing a lake and tributary monitoring program to evaluate the effects of the improvement projects on the water quality of the lake and tributary streams

When elected to office, former County Executive Joanie Mahoney was determined to find a better way forward for the county to meet the water quality goals of the ACJ and have beneficial impacts on the community, both socially and economically. Rather than building more sewage treatment plants in neighborhoods and in Armory Square, County Executive Mahoney took a bold step and put a temporary hold on ACJ construction projects to determine the feasibility of incorporating the use of green infrastructure in combination with smart gray infrastructure.  The County Executive has been a pioneer in the implementation of green infrastructure to prevent CSO occurrences. The County worked with a variety of stakeholders to develop a more sustainable solution that would include a combination of green and gray solutions to improve the water quality in Onondaga Lake. The 4th stipulation of the ACJ, which was approved by the Court in November 2009, includes the combined use of gray and green infrastructure solutions and sets forth an aggressive initiative to develop green infrastructure to reduce CSO pollution. This plan is the Save the Rain program. Due to the success of its Save the Rain program, Onondaga County has become a national leader in the use of environmentally sustainable solutions to reduce CSO pollution. More importantly, the water quality of Onondaga Lake continues to improve, making it the true beneficiary of this successful program.