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DATA
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Regional Data Providers:
Chesapeake Bay Program
Washington, DC
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Other Data Sources
Long-term Fixed Station
Monthly Monitoring Data Query
Choose station(s), a date range, and your parameters of interest.
Click "Submit" to download your data.
1. Select Station(s)
:
Press 'CTRL' to select up to 3 stations.
View map of Maryland long term monitoring stations (PDF)
Chesapeake Bay Mainstem: Susquehanna River (Conowingo) - CB1.0
Chesapeake Bay Mainstem: Mouth of Susquehanna River - CB1.1
Chesapeake Bay Mainstem: Turkey Point - CB2.1
Chesapeake Bay Mainstem: Still Pond - CB2.2
Chesapeake Bay Mainstem: Gunpowder Neck - CB3.1
Chesapeake Bay Mainstem: Swan Point - CB3.2
Chesapeake Bay Mainstem: Bay Bridge (N) - CB3.3C
Chesapeake Bay Mainstem: Bay Bridge (NE) - CB3.3E
Chesapeake Bay Mainstem: Bay Bridge (NW) - CB3.3W
Chesapeake Bay Mainstem: Kent Point (SW) - CB4.1C
Chesapeake Bay Mainstem: Kent Point (S) - CB4.1E
Chesapeake Bay Mainstem: Horseshoe Point - CB4.1W
Chesapeake Bay Mainstem: MD Mid Bay - CB4.2C
Chesapeake Bay Mainstem: Tilghman Island - CB4.2E
Chesapeake Bay Mainstem: Plum Point - CB4.2W
Chesapeake Bay Mainstem: Dares Beach - CB4.3C
Chesapeake Bay Mainstem: Mouth of Choptank River - CB4.3E
Chesapeake Bay Mainstem: Dares Beach - CB4.3W
Chesapeake Bay Mainstem: Cove Point - CB4.4
Chesapeake Bay Mainstem: Cedar Point - CB5.1
Chesapeake Bay Mainstem: Mouth of Patuxent River - CB5.1W
Chesapeake Bay Mainstem: Point No Point - CB5.2
Chesapeake Bay Mainstem: Smith Point - CB5.3
Choptank River: Outer Choptank - EE2.1
Choptank River: Little Choptank - EE2.2
Choptank River: Choptank River at Ganey Wharf - ET5.1
Choptank River: Choptank River at US Rt 50 - ET5.2
Lower Eastern Shore: Back Creek - BXK0031
Lower Eastern Shore: Chicamacomico River - CCM0069
Lower Eastern Shore: Fishing Bay - EE3.0
Lower Eastern Shore: N. Tangier Sound - EE3.1
Lower Eastern Shore: S. Tangier Sound - EE3.2
Lower Eastern Shore: Pocomoke Sound - EE3.3
Lower Eastern Shore: Pocomoke River - ET10.1
Lower Eastern Shore: Nanticoke River (Sharptown) - ET6.1
Lower Eastern Shore: Nanticoke River - ET6.2
Lower Eastern Shore: Wicomico River (Whitehaven) - ET7.1
Lower Eastern Shore: Manokin River - ET8.1
Lower Eastern Shore: Big Annemessex River - ET9.1
Lower Eastern Shore: Manokin River - MNK0146
Lower Eastern Shore: Pocomoke River - POK0087
Lower Eastern Shore: Transquaking River - TRQ0088
Lower Eastern Shore: Transquaking River - TRQ0146
Lower Eastern Shore: Wicomico River - WIW0141
Lower Eastern Shore: Pocomoke River - XAK7810
Lower Eastern Shore: Wicomico River - XCI4078
Lower Eastern Shore: Nanticoke River - XDJ9007
Lower Potomac River: Ragged Point - LE2.2
Lower Potomac River: Point Lookout - LE2.3
Lower Potomac River: Maryland Point - RET2.2
Lower Potomac River: Morgantown Bridge (Rt 301) - RET2.4
Lower Potomac River: Indian Head - TF2.3
Lower Potomac River: Quantico - TF2.4
Lower Western Shore: Magothy River - WT6.1
Lower Western Shore: Severn River - WT7.1
Lower Western Shore: South River - WT8.1
Lower Western Shore: Rhode River - WT8.2
Lower Western Shore: West River - WT8.3
Mattawoman Creek: Mattawoman - MAT0016
Mattawoman Creek: MD Rte 225 - MAT0078
Middle Potomac River: Little Falls - POT1184
Middle Potomac River: Off Piscataway - TF2.1
Patuxent River: Jack Bay - LE1.1
Patuxent River: St. Leonard - LE1.2
Patuxent River: Above Point Patience - LE1.3
Patuxent River: Drum Point - LE1.4
Patuxent River: Below Benedict - RET1.1
Patuxent River: US Rt 50 Bridge - TF1.0
Patuxent River: Western Branch - TF1.2
Patuxent River: Waysons Corner (Rt 4) - TF1.3
Patuxent River: Jackson Landing - TF1.4
Patuxent River: Nottingham - TF1.5
Patuxent River: Lower Marlboro - TF1.6
Patuxent River: Above Benedict - TF1.7
Patuxent River: Western Branch (Mt Calvert House) - WXT0001
Piscataway Creek: Piscataway Creek - PIS0033
Piscataway Creek: Piscataway - XFB1986
Potomac River: Smith Point (SW) - RET2.1
Potomac River: Marshall Hall - TF2.2
Upper Eastern Shore: Eastern Bay - EE1.1
Upper Eastern Shore: Northeast River - ET1.1
Upper Eastern Shore: Back Creek (C&D Canal) - ET2.1
Upper Eastern Shore: Bohemia River - ET2.2
Upper Eastern Shore: Elk River - ET2.3
Upper Eastern Shore: Sassafras River - ET3.1
Upper Eastern Shore: Chester River - ET4.1
Upper Eastern Shore: Lower Chester River - ET4.2
Upper Potomac River: Shepherdstown - POT1830
Upper Western Shore: Gunpowder River - GUN0125
Upper Western Shore: Bush River - WT1.1
Upper Western Shore: Gunpowder River (tidal) - WT2.1
Upper Western Shore: Middle River - WT3.1
Western Shore Patapsco and Back Rivers: Back River - WT4.1
Western Shore Patapsco and Back Rivers: Baltimore Harbor - WT5.1
2. Select Date Range:
Please enter desired date range in mm/dd/yyyy format.
Start Date
:
End Date
:
Earliest is 01/16/1984
Latest is 03/09/2026
3. Choose Parameter(s)
:
Select / De-select All Parameters
Temperature (°C)
Salinity (ppt)
Specific Conductivity (µScm)
Dissolved Oxygen (mg/L)
pH
Chlorophyl α (µg/L)
Pheophytin
Secchi Depth (m)
Light attenuation (KD)
Total Suspended Solids (TSS)
Volatile Suspended Solids (VSS)
Fixed Suspended Solids (FSS)
Biogenic Silica
Silica
Nitrogen:
Total Nitrogen (TN)
Total Dissolved Nitrogen (TDN)
Total Organic Nitrogen (DON)
Dissolved Organic Nitrogen (DON)
Dissolved Inorganic Nitrogen (DIN)
Particulate Nitrogen (PN)
Particulate Organic Nitrogen (PON)
Ammonium (NH4F)
Nitrite + Nitrate (NO23F)
Nitrite (NO2F)
Nitrate (NO3F)
Total Kjeldahl nitrogen (TKNF)
Carbon:
Total Organic Carbon (DOC)
Dissolved Organic Carbon (DOC)
Particulate Organic Carbon (POC)
Particulate Carbon (PC)
Phosphorus:
Total Phosphorus (TP)
Total Dissolved Phosphorus (TDP)
Dissolved Organic Phosphorus (DOC)
Particulate Phosphorus (PP)
Particulate Inorganic Phosphorus (PIP)
Orthophosphorus (PO4F)
Please be patient while your file is downloaded.
Check your "Downloads" folder, file name will be: 'EOTBLongTerm_09Mar2026.csv'
