Photos of the Long Island Sound

Research & Monitoring

Status and Trends: LISS Environmental Indicators

Spawning Runs in LIS tributaries

Atlantic Salmon Restoration in the CT River System

This indicator is the abundance of Atlantic salmon counted at observation stations in the Connecticut River. View Indicator

Herring Runs at Streams with Upstream Planned Fishway Projects

These counts indicate progress in expanding upstream habitat as fishway projects are completed. View Indicator

Index of Anadromous Fish Runs

These counts of river herring and shad in Long Island Sound tributaries indicate the quality of upstream habitat that has been opened up as a result of completed fishway projects. View Indicator

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