| NWSLI | Location Description |
| BEAC3 | NAUGATUCK RIVER AT BEACON FALLS |
| BKFC3 | STILL RIVER AT ROUTE 7 AT BROOKFIELD CENTER |
| BKRC3 | BLACK ROCK TAILWATER |
| BLGC3 | BUNNELL BROOK NEAR BURLINGTON 1N |
| BROC3 | BROAD BROOK AT BROAD BROOK |
| CHAC3 | NATCHAUG RIVER AT MARCY RD NEAR CHAPLIN |
| COGC3 | COGINCHAUG RIVER AT MIDDLEFIELD |
| CRLC3 | COLEBROOK RIVER LAKE AT ROBERTSVILLE |
| CVTC3 | WILLIMANTIC RIVER NEAR COVENTRY |
| EHDC3 | HOCKANUM RIVER NEAR EAST HARTFORD 3E |
| EHMC3 | SALMON RIVER NEAR EAST HAMPTON 4SE |
| FENC3 | FENTON RIVER AT GURLEYVILLE RD NEAR MANSFIELD 2NE |
| FLVC3 | HOUSATONIC RIVER AT FALLS VILLAGE |
| GAYC3 | HOUSATONIC RIVER AT GAYLORDSVILLE |
| HANC3 | HANCOCK BROOK LAKE NEAR PLYMOUTH 3SSE |
| HFDC3 | CONNECTICUT RIVER NEAR HARTFORD 3S |
| HKVC3 | WEEKEEPEEMEE RIVER AT HOTCHKISSVILLE |
| HMDC3 | HALL MEADOW BROOK RESERVOIR NEAR TORRINGTON 5NNW |
| HNOC3 | LITTLE RIVER NEAR HANOVER |
| HOPC3 | HOP BROOK LAKE TAILWATER |
| JCYC3 | QUINEBAUG RIVER NEAR JEWETT CITY |
| LRKC3 | SALMON CREEK NEAR LIME ROCK |
| MFDC3 | MANSFIELD HOLLOW LAKE - NATCHAUG RIVER AT MANSFIELD |
| MHDC3 | CONNECTICUT RIVER AT MIDDLE HADDAM |
| MLTC3 | NEPP SITE NEAR MIDDLETOWN 4W |
| MTCC3 | NEPP SITE AT MT CARMEL |
| MWNC3 | NONEWAUG RIVER AT MINORTOWN |
| NBLC3 | NORTHFIELD BROOK LAKE AT THOMASTON |
| NFKC3 | NEPP SITE NEAR NORFOLK 2SW |
| PHBC3 | PENDLETON HILL BROOK NEAR CLARK FALLS 2NW |
| PUTC3 | QUINEBAUG RIVER AT PUTNAM |
| QBGC3 | QUINENAUG RIVER NEAR QUINEBAUG 1S |
| RVRC3 | WEST BRANCH FARMINGTON RIVER AT RIVERTON |
| SAUC3 | SAUGATUCK MOUNTAIN RESERVOIR AT EASTON |
| SBYC3 | POMPERAUG RIVER AT SOUTHBURY |
| SIMC3 | FARMINGTON RIVER AT SIMSBURY |
| STBC3 | STONY BROOK NEAR WEST SUFFIELD |
| STDC3 | STAMFORD HARBOR AT STAMFORD |
| STFC3 | NEPP SITE AT STAMFORD MUSEUM AND NATURE CENTER |
| STVC3 | HOUSATONIC RIVER AT STEVENSON |
| TARC3 | FARMINGTON RIVER AT TARIFFVILLE |
| TMSC3 | THOMASTON LAKE NEAR THOMASTON 2NNE |
| TMTC3 | NAUGATUCK RIVER BELOW THOMASTON |
| TMVC3 | CONNECTICUT RIVER AT THOMPSONVILLE |
| TORC3 | EAST BRANCH NAUGATUCK RESERVOIR AT DAM NEAR TORRINGTON 2N |
| TRBC3 | NAUGATUCK RIVER AT BLACK ROCK STATE PARK NEAR THOMASTON 2NE |
| UNCC3 | HOP BROOK LAKE NEAR UNION CITY |
| UNVC3 | FARMINGTON RIVER AT UNIONVILLE |
| WALC3 | QUINNIPIAC RIVER AT WALLINGFORD |
| WATC3 | NAUGATUCK RIVER AT WEST MAIN STREET BRIDGE AT WATERBURY |
| WDVC3 | SHEPAUG RIVER AT PETERS DAM AT WOODVILLE |
| WHFC3 | NEPP SITE AT WEST HARTFORD |
| WINC3 | MAD RIVER RESERVOIR DAM NEAR WINSTED 1WNW |
| WLMC3 | SHETUCKET RIVER NEAR WILLIMANTIC |
| WMNC3 | NATCHAUG RIVER AT MANSFIELD HOLLOW LAKE NEAR WILLIMANTIC |
| WRNC3 | MOUNT HOPE RIVER NEAR WARRENVILLE 2S |
| WTHC3 | WEST THOMPSON LAKE - QUINEBAUG RIVER AT WEST THOMPSON |
| YTCC3 | YANTIC RIVER AT NORWICH |