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During the past 20 years, nitrogen loads to Long Island Sound (LIS) have been substantially reduced in large watersheds affected by municipal wastewater loads.
As of 2014, nitrogen loads were reduced substantially in the Long Island Sound, largely meeting the goals set by a Total Maximum Daily Load (TMDL) requirement between the States of Connecticut and New York. While the nitrogen loads have declined in the larger tributaries of Long Island Sound, there is little information on the current contribution of nitrogen from smaller nonpoint sources such as lawn fertilizers and private onsite septic systems.
To assess nitrogen contributions from small tributaries to the LIS, the U.S. Geological Survey will sample a network of 45 stream locations during typical base-flow conditions. Sampling locations were selected from small basins (2 – 20 mi2) in the southern portion of the LIS watershed, and are located across the states of Rhode Island, Connecticut, and New York. The sampling locations were selected to avoid major water withdrawals or diversions, across a gradient of increasing urbanization, and across a gradient of geology. Sampling locations were selected to represent residential areas including those with on-site septic systems, rather than areas of major commercial development. Samples will be collected during two different time periods, including both the non-growing and growing seasons when streamflow conditions are at or close to mean annual base flow. This will be done to compare time periods with different in-stream processing of nutrients by biota.
Deliverables for this project include:
1) Published data sets of water-quality (nitrogen and phosphorus constituents) and streamflow data from the selected sampling locations, and
2) A USGS Scientific Investigations Report detailing findings.
USGSSTATION ID |
USGS STATION NAME |
DRAINAGE AREA(square miles) |
011173545 |
QUEEN R 1400 FT UPSTR WM REYNOLDS RD AT EXETER RI |
3.78 |
01117468 |
BEAVER RIVER NEAR USQUEPAUG, RI |
8.87 |
01117900 |
BRUSHY BROOK NEAR HOPE VALLEY, RI |
3.71 |
01118300 |
PENDLETON HILL BROOK NEAR CLARKS FALLS, CT |
4.02 |
01118368 |
SHUNOCK RIVER AT ROUTE 2 AT NORTH STONINGTON, CT |
2.28 |
01122649 |
INDIAN HOLLOW BK AT JERUSALEM RD NEAR WINDHAM, CT |
4.39 |
01122710 |
MERRICK BROOK AT BASS RD NEAR SCOTLAND, CT |
11.5 |
01122875 |
DOWNING BROOK AT COLBURN RD NEAR CANTERBURY, CT |
2.08 |
01126525 |
SUGAR BROOK AT SUGAR BRK RD NR CENTRAL VILLAGE, CT |
2.47 |
01126644 |
UNAMED TRIB AT COMMUNITY AVE EXT AT PLAINFIELD, CT |
3.08 |
01126804 |
CORY BROOK AT DEPOT RD NEAR CANTERBURY, CT |
7.34 |
01126908 |
MOUNT MISERY BROOK ABV LOWDEN BRK NR VOLUNTOWN, CT |
4.53 |
01126925 |
MYRON KINNEY BK NR VOLUNTOWN CT |
4.47 |
01127680 |
TRADING COVE BK AT LEFFINGWELL, CT |
5.2 |
01128922 |
HEMPSTEAD BK AT BUDDINGTON RD NR GROTON, CT |
2.91 |
01192929 |
LONG HILL BROOK AT MILL ST AT MIDDLETOWN, CT |
5.01 |
01193129 |
CANDLEWOOD HILL BROOK NEAR LITTLE CITY, CT |
2.21 |
01193400 |
FAWN BK NR NORTH WESTCHESTER, CT |
12.8 |
01193600 |
FLAT BK NR EAST HAMPTON, CT |
2.43 |
01193794 |
ROARING BROOK NUMBER 2 NR EAST HADDAM, CT |
2.84 |
01194510 |
CEDAR POND BROOK AT BEAVER BK RD NR NORTH LYME, CT |
2.42 |
01195100 |
INDIAN RIVER NEAR CLINTON, CT |
5.68 |
01195113 |
BUNKER HILL BROOK AT RTE 148 NR KILLINGWORTH, CT |
2.0 |
01195149 |
HUZZLE GUZZLE BRK AT HORSE POND RD NR MADISON, CT |
2.08 |
01196081 |
HUMISTON BROOK AT MARION AVE AT MARION, CT |
2.18 |
01196210 |
HONEYPOT BROOK AT CREAMERY ROAD AT CHESHIRE, CT |
2.06 |
0119665996 |
UNNAMED TRIBUTARY AT RED CEDAR RD ORANGE, CT |
2.75 |
01201009 |
UNAMED TRIBUTARY AT WARREN, CT |
4.51 |
01201995 |
W BR SHEPAUG R NR MILTON, CT |
1.3 |
01202700 |
BUTTERNUT BK NR LITCHFIELD, CT |
2.44 |
012035014 |
POOTATUCK RIVER AT RTE 25 AT BOTSFORD, CT |
10.7 |
01205555 |
HALL MEADOW BK NR WINCHESTER, CT |
10.6 |
01205595 |
NICKEL MINE BK AT NORFOLK RD AT W TORRINGTON, CT |
5.57 |
01205904 |
SPRUCE BK AT E LITCHFIELD RD AT E LITCHFIELD, CT |
2.54 |
012087991 |
FARMILL RIVER AT MOHEGAN RD NEAR SHELTON, CT |
3.71 |
01208948 |
SASCO BK AT SOUTHPORT ON INGLESIDE RD ABV BANKS PD |
5.38 |
01208984 |
UMPAWAUG POND BROOK AT SIMPAUG TPKE NR REDDING, CT |
2.04 |
01209300 |
W BR SAUGATUCK R AT WESTON, CT |
9.15 |
01209716 |
EAST BRANCH SILVERMINE R AT RTE 33 NR WILTON, CT |
1.97 |
01210310 |
E BRANCH MIANUS R AT WILDWOOD RD NR STAMFORD, CT |
3.92 |
01211106 |
GREENWICH CREEK AT RTE 1 NR COS COB, CT |
4.98 |
01299000 |
BLIND BROOK NEAR PURCHASE NY |
2.1 |
01299200 |
UNAMED TRIBUTARY AT LINCOLN AVE NEAR PURCHASE, NY |
2.18 |
01301960 |
TROUBLESOME BROOK AT BRONX R PKWY NR TUCKAHOE, NY |
2.72 |
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are hydrologists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are hydrologists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are scientists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are scientists reconning the site for viability.
USGS sample location at 01201995, West Branch Shepaug River at Cornwall Bridge Connecticut.
USGS sample location at 01201995, West Branch Shepaug River at Cornwall Bridge Connecticut.
A new USGS sample location at 01126908, Mount Misery Brook above Lowden Brook near Voluntown, Connecticut.
A new USGS sample location at 01126908, Mount Misery Brook above Lowden Brook near Voluntown, Connecticut.
USGS sample location at 01208948, Sasco Brook at Southport, Connecticut on Ingleside Road above Banks Pond.
USGS sample location at 01208948, Sasco Brook at Southport, Connecticut on Ingleside Road above Banks Pond.
During the past 20 years, nitrogen loads to Long Island Sound (LIS) have been substantially reduced in large watersheds affected by municipal wastewater loads.
As of 2014, nitrogen loads were reduced substantially in the Long Island Sound, largely meeting the goals set by a Total Maximum Daily Load (TMDL) requirement between the States of Connecticut and New York. While the nitrogen loads have declined in the larger tributaries of Long Island Sound, there is little information on the current contribution of nitrogen from smaller nonpoint sources such as lawn fertilizers and private onsite septic systems.
To assess nitrogen contributions from small tributaries to the LIS, the U.S. Geological Survey will sample a network of 45 stream locations during typical base-flow conditions. Sampling locations were selected from small basins (2 – 20 mi2) in the southern portion of the LIS watershed, and are located across the states of Rhode Island, Connecticut, and New York. The sampling locations were selected to avoid major water withdrawals or diversions, across a gradient of increasing urbanization, and across a gradient of geology. Sampling locations were selected to represent residential areas including those with on-site septic systems, rather than areas of major commercial development. Samples will be collected during two different time periods, including both the non-growing and growing seasons when streamflow conditions are at or close to mean annual base flow. This will be done to compare time periods with different in-stream processing of nutrients by biota.
Deliverables for this project include:
1) Published data sets of water-quality (nitrogen and phosphorus constituents) and streamflow data from the selected sampling locations, and
2) A USGS Scientific Investigations Report detailing findings.
USGSSTATION ID |
USGS STATION NAME |
DRAINAGE AREA(square miles) |
011173545 |
QUEEN R 1400 FT UPSTR WM REYNOLDS RD AT EXETER RI |
3.78 |
01117468 |
BEAVER RIVER NEAR USQUEPAUG, RI |
8.87 |
01117900 |
BRUSHY BROOK NEAR HOPE VALLEY, RI |
3.71 |
01118300 |
PENDLETON HILL BROOK NEAR CLARKS FALLS, CT |
4.02 |
01118368 |
SHUNOCK RIVER AT ROUTE 2 AT NORTH STONINGTON, CT |
2.28 |
01122649 |
INDIAN HOLLOW BK AT JERUSALEM RD NEAR WINDHAM, CT |
4.39 |
01122710 |
MERRICK BROOK AT BASS RD NEAR SCOTLAND, CT |
11.5 |
01122875 |
DOWNING BROOK AT COLBURN RD NEAR CANTERBURY, CT |
2.08 |
01126525 |
SUGAR BROOK AT SUGAR BRK RD NR CENTRAL VILLAGE, CT |
2.47 |
01126644 |
UNAMED TRIB AT COMMUNITY AVE EXT AT PLAINFIELD, CT |
3.08 |
01126804 |
CORY BROOK AT DEPOT RD NEAR CANTERBURY, CT |
7.34 |
01126908 |
MOUNT MISERY BROOK ABV LOWDEN BRK NR VOLUNTOWN, CT |
4.53 |
01126925 |
MYRON KINNEY BK NR VOLUNTOWN CT |
4.47 |
01127680 |
TRADING COVE BK AT LEFFINGWELL, CT |
5.2 |
01128922 |
HEMPSTEAD BK AT BUDDINGTON RD NR GROTON, CT |
2.91 |
01192929 |
LONG HILL BROOK AT MILL ST AT MIDDLETOWN, CT |
5.01 |
01193129 |
CANDLEWOOD HILL BROOK NEAR LITTLE CITY, CT |
2.21 |
01193400 |
FAWN BK NR NORTH WESTCHESTER, CT |
12.8 |
01193600 |
FLAT BK NR EAST HAMPTON, CT |
2.43 |
01193794 |
ROARING BROOK NUMBER 2 NR EAST HADDAM, CT |
2.84 |
01194510 |
CEDAR POND BROOK AT BEAVER BK RD NR NORTH LYME, CT |
2.42 |
01195100 |
INDIAN RIVER NEAR CLINTON, CT |
5.68 |
01195113 |
BUNKER HILL BROOK AT RTE 148 NR KILLINGWORTH, CT |
2.0 |
01195149 |
HUZZLE GUZZLE BRK AT HORSE POND RD NR MADISON, CT |
2.08 |
01196081 |
HUMISTON BROOK AT MARION AVE AT MARION, CT |
2.18 |
01196210 |
HONEYPOT BROOK AT CREAMERY ROAD AT CHESHIRE, CT |
2.06 |
0119665996 |
UNNAMED TRIBUTARY AT RED CEDAR RD ORANGE, CT |
2.75 |
01201009 |
UNAMED TRIBUTARY AT WARREN, CT |
4.51 |
01201995 |
W BR SHEPAUG R NR MILTON, CT |
1.3 |
01202700 |
BUTTERNUT BK NR LITCHFIELD, CT |
2.44 |
012035014 |
POOTATUCK RIVER AT RTE 25 AT BOTSFORD, CT |
10.7 |
01205555 |
HALL MEADOW BK NR WINCHESTER, CT |
10.6 |
01205595 |
NICKEL MINE BK AT NORFOLK RD AT W TORRINGTON, CT |
5.57 |
01205904 |
SPRUCE BK AT E LITCHFIELD RD AT E LITCHFIELD, CT |
2.54 |
012087991 |
FARMILL RIVER AT MOHEGAN RD NEAR SHELTON, CT |
3.71 |
01208948 |
SASCO BK AT SOUTHPORT ON INGLESIDE RD ABV BANKS PD |
5.38 |
01208984 |
UMPAWAUG POND BROOK AT SIMPAUG TPKE NR REDDING, CT |
2.04 |
01209300 |
W BR SAUGATUCK R AT WESTON, CT |
9.15 |
01209716 |
EAST BRANCH SILVERMINE R AT RTE 33 NR WILTON, CT |
1.97 |
01210310 |
E BRANCH MIANUS R AT WILDWOOD RD NR STAMFORD, CT |
3.92 |
01211106 |
GREENWICH CREEK AT RTE 1 NR COS COB, CT |
4.98 |
01299000 |
BLIND BROOK NEAR PURCHASE NY |
2.1 |
01299200 |
UNAMED TRIBUTARY AT LINCOLN AVE NEAR PURCHASE, NY |
2.18 |
01301960 |
TROUBLESOME BROOK AT BRONX R PKWY NR TUCKAHOE, NY |
2.72 |
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are hydrologists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are hydrologists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are scientists reconning the site for viability.
A new USGS sample location at 01193400, Fawn Brook near North Westchester, Connecticut. Pictured are scientists reconning the site for viability.
USGS sample location at 01201995, West Branch Shepaug River at Cornwall Bridge Connecticut.
USGS sample location at 01201995, West Branch Shepaug River at Cornwall Bridge Connecticut.
A new USGS sample location at 01126908, Mount Misery Brook above Lowden Brook near Voluntown, Connecticut.
A new USGS sample location at 01126908, Mount Misery Brook above Lowden Brook near Voluntown, Connecticut.
USGS sample location at 01208948, Sasco Brook at Southport, Connecticut on Ingleside Road above Banks Pond.
USGS sample location at 01208948, Sasco Brook at Southport, Connecticut on Ingleside Road above Banks Pond.