Setting realistic and measurable goals is essential to the successful implementation of this Stormwater Master Plan. Goals are the desired change or outcome as a result of this planning effort. Depending on the magnitude of the problem, goals may be general, specific, long-term, or short-term. Performance Criteria are measures that will be used to formulate and/or screen the proposed alternatives to address stormwater concerns to meet the goals. This Chapter defines the goals and performance criteria for the Town of Fishers Stormwater Master Plan.

1. Reduce flooding and drainage problems in the Town of Fishers.
2. Improve water quality of stormwater runoff in the Town of Fishers.
3. Protect, enhance, and restore natural systems for stormwater conveyance and storage in the Town of Fishers.

Homes along Mud Creek sit back and above potential flood areas.

Preserving natural areas like Ritchey Woods improves stream habitat, flood control, and water quality.

Based on the nature and extent of existing and future stormwater conditions and concerns, as presented in Chapter 2 and Chapter 3, the following set of technical, environmental, institutional, social, and economic Performance Criteria were developed to aid in the formulation of recommended solutions, as well as in screen alternatives.

The recommendations for improvements and addressing stormwater concerns identified in Chapter 5 of this Master Plan should be formulated to:

• Maintain clear travel lanes from local runoff for the 10% annual occurrence flood or more frequent runoff episodes according to the following standards:
• Subdivision streets – one 10’ (8’) clear travel lane available
• Main two way streets – one 10’ (8’) clear travel lanes available in each direction
• Divided streets or 4 lane with/ center turn lane –one 10’ (8’) clear travel lane available in each direction
• Deceleration Lanes, turn lanes – 10’(8’) clear lane
• Additional clear lanes should be provided if public safety is an issue (such as site distance for avoiding flooded road)
• Maintain flood free roads to at least the 1% annual chance flood elevation with no overflow from riverine sources.
• Protect homes to the 1% annual chance flood elevation plus 2 feet of freeboard.
• Result in no adverse impact to flood levels downstream or upstream
• Not exceed the maximum depth and spread (2% or 1% annual chance of flooding)
• Not result in an illicit discharge.
• Be consistent with the Town of Fishers Stormwater Management Ordinance for water quantity and quality.
• Limit the loss of stream habitat by maintaining or creating a Qualitative Habitat Evaluation Index (QHEI) scoring of 60+.
• Restore the natural and beneficial function of the floodplain and improve stream health based on Rosgen or equivalent stream classification system.
• Limit loss of wetland aquatic and terrestrial species by maintaining or enhancing wetlands based on US Fish and Wildlife Service (USFWS) and IDEM wetland classification systems.
• Be fundable and reduce economic damages.
• Be socially and politically acceptable to residents and, to the extent practical, to other interest groups.
• Be permittable under existing federal, state, and local permit programs.