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Blackwater NWR (BWR139)

Site Photos
Site Information
Site ID BWR139
Site name Blackwater NWR
County Dorchester
State abbreviation MD
AQS ID 240199991
Latitude; decimal degrees 38.444971
Longitude; decimal degrees -76.111274
Elevation; m 1
Operating agency EPA
Start date 07/04/1995
Primary Land Use Forest/Marsh
Terrain surrounding site Coastal
Distance to nearest NTN site; km 50.673
Co-located NADP/AMoN Site ID MD06
View Map View Map
Graphical Results
Composition of total nitrogen deposition by species
Trends in total nitrogen deposition
Trends in wet and dry nitrogen deposition
Composition of total sulfur deposition by species
Trends in total sulfur deposition
Trends in wet and dry sulfur deposition
Trend in maximum 8-hour average ozone concentrations
Trend in 3-year average of ozone W126 index
Site History
OZONE : Ozone dryer installed 24-AUG-17
SHELTER_TEMPERATURE : A/C and Heat logger control installed. 12-AUG-15
OZONE : New certification range for site transfer standard 15-AUG-14
OZONE : Knockout bottle reinstalled in ozone sample line. 17-JUL-14
OZONE : Exhaust tubing run in insulation with sample tubing 09-JUL-14
OZONE : Knock-out bottle removed. 28-FEB-14
OZONE : Foam insulation added to sample line. 28-FEB-14
OZONE : ZSP order changed to SPZ. 28-FEB-14
TEMPERATURE : 9m temperature measurement with passive aspiration installed. 13-AUG-13
RELATIVE_HUMIDITY : Sensor unwired. 13-AUG-13
SIGMA_THETA : Sensor unwired. 13-AUG-13
WIND_DIRECTION : Sensor unwired. 13-AUG-13
WINDSPEED : Sensor unwired. 13-AUG-13
TEMP2 : Sensor unwired. 13-AUG-13
WINDSPEED_SCALAR : Sensor unwired. 13-AUG-13
OZONE : Site analyzer with replacement pressure transducer installed. 24-JAN-12
OZONE : Ozone sample line filter removed from inside the shelter. 09-AUG-11
OZONE : 40CFR Part 58 ozone site upgrade completed using Level 2 site transfer standard. 23-FEB-11
OZONE : Ozone tubing changed from 3/8 inch to 1/4 inch. 23-FEB-11
OZONE : 40CFR Part 58 ozone site installed using independent site transfer standard. 13-AUG-10
DATALOGGER : CR3000 datalogger installed. Wiring standardized. 27-AUG-08

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