Olivia H. Devereux
Andrew E Lamotte
Andrew J Sekellick
2018
Annual estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014
tabular digital data
https://doi.org/10.5066/P9OVU9PX
This metadata record documents a comma-delimited table representing scenario output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The annual effect of best management practices (BMP) on water quality in the Chesapeake Bay Watershed (CBWS) is estimated through a series of model scenarios. The model output data tables for each year from 1985 to 2014 are included with estimated mass of nitrogen, phosphorus, and sediment. Each year has an output table for a “Progress” scenario, which is a model run with all BMPs active, and a “No Action” scenario, which is a model run with all BMPs deactivated. Model output is provided at the Watershed Model land-river segment scale.
Analysis of BMP implementation over time can provide insight to water quality restoration progress. These data, in combination with Chesapeake Bay Program Partnership Model isolation scenarios and reported implementation of BMPs, were created to isolate the effect of different types of BMP to determine expected changes in nitrogen, phosphorus, and sediment loads in the Chesapeake Bay watershed due to BMP implementation.
This dataset was created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model (U.S. Environmental Protection Agency, 2010). Scenarios include data with the reported BMPs, as well as a scenario with no BMPs. Scenarios include the atmospheric deposition expected from implementation of the Clean Air Act. Best management practice implementation data were determined by Chesapeake Bay Watershed jurisdictions including Maryland, Pennsylvania, Virginia, Delaware, New York, West Virginia, and the District of Columbia. Data were reported to the Chesapeake Bay Program for an annual review of progress toward meeting nitrogen, phosphorus, and sediment reduction goals. Data include the modeled load for nitrogen, phosphorus and sediment delivered to streams with flow greater than 100 cubic feet per second within the Chesapeake Bay watershed. Model scenarios were designed to determine the impact that BMPs have on pollutant loads. The Progress scenario is compared to the No Action scenario to determine the estimated effect of all BMPs.
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References:
U.S. Environmental Protection Agency, 2010, Chesapeake Bay Phase 5.3 Community Watershed Model: EPA 903S10002 - CBP/TRS-303-10, U.S. Environmental Protection Agency, Chesapeake Bay Program Office, December 2010.
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Table descriptions:
prognaloads.csv: This table contains Progress and No Action modeled loads by land-river segment, land use, water quality constituent, and year.
1985
2014
publication date
None planned
-81.73828125000001
-74.70703125000001
42.42345651793833
35.60371874069731
None
Chesapeake Bay watershed
Conservation practice
Watershed Model
Best management practice
BMP
Nitrogen
Phosphorus
Sediment
Nutrient sources
USGS Metadata Identifier
USGS:5b3e5920e4b060350a0efabe
None
United States
USA
Delaware
District of Columbia
Maryland
New York
Pennsylvania
Virginia
West Virginia
Appomattox River
Chesapeake Bay
Choptank River
James River
Mattaponi River
Non-RIM Eastern Shore
Non-RIM Western Shore
Pamunkey River
Patuxent River
Potomac River
Rappahannock River
Susquehanna River
None. Please see 'Distribution Info' for details.
None. Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations.
Olivia Devereux
Devereux Environmental Consulting
mailing and physical
9219 Mintwood Street
Silver Spring
Maryland
20901
301-325-7449
olivia@devereuxconsulting.com
No formal attribute accuracy tests were conducted.
data quality was assured by testing the datasets for outliers, repetitive and (or) illogical values.
Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
U.S. Environmental Protection Agency, Chesapeake Bay Program Office
20101201
Chesapeake Bay Phase 5.3 Community Watershed Model
tabular digital data
EPA 903S10002 - CBP/TRS-303-10
Digital
20101201
publication date
Chesapeake Bay Program Phase 5.3.2 Watershed Model
Model output used to build tables
A total of 60 scenarios of the Chesapeake Bay Program Phase 5.3.2 Watershed Model were provided to USGS to isolate the effect of BMPs. For each year from 1985 through 2014, a “Progress” scenario and a “No Action” scenario were provided. The Progress scenarios are model runs that included all reported BMPs as active, while the No Action scenarios have all BMPs deactivated in the model. All other sources and conditions (wastewater, atmospheric deposition, etc) between the Progress and No Action scenarios of the same year are identical. Data were provided as mass of nitrogen, phosphrous, and sediment delivered to local streams from generilazed sources and land use classes. The classes are agriculture, atmospheric deposition to water, developed land, forest, and wastewater. This data table is a compilation of the provided scenarios that includes the subtraction of estimated loads by land use type and year for the "Progress" scenario from the "No Action" scenario for each constituent type.
20160831
prognaloads.csv
Comma Separated Value (CSV) file containing annual estimates of nutrient and sediment loads to streams.
Chesapeake Bay Program
Spec
Constituent
Chesapeake Bay Program
TOTN
Total nitrogen
Chesapeake Bay Program
TOTP
Total phosphorus
Chesapeake Bay Program
TSED
Total sediment
Chesapeake Bay Program
Unit
Unit of measure for data value
Chesapeake Bay Program
lbs
Pounds
Chesapeake Bay Program
scen
Scenario type
Chesapeake Bay Program
NA
No Action scenario
Chesapeake Bay Program
PR
Progress scenario
Chesapeake Bay Program
year
Year of scenario
Chesapeake Bay Program
1985
2014
lrseg
Land-river segment
Chesapeake Bay Program
Land-river segments are the spatial units modeled by the Chesapeake Bay Program Phase 5.3.2 Watershed model
luclass1
Land use class (or source type)
Devereux Environmental Consulting
ag
Agricultural land
Devereux Environmental Consulting
adw
Atmospheric deposition to water
Devereux Environmental Consulting
dev
Developed land
Devereux Environmental Consulting
for
Forested land
Devereux Environmental Consulting
wast
Wastewater
Devereux Environmental Consulting
RIM
Rim watershed
Devereux Environmental Consulting
NON-RIM ES
Eastern shore of the Chesapeake Bay watershed downstream of RIM monitoring.
Devereux Environmental Consulting
CHOPTANK
Choptank River watershed upstream of USGS gage 01491000.
Devereux Environmental Consulting
NON-RIM WS
Western shore of the Chesapeake Bay watershed downstream of RIM monitoring.
Devereux Environmental Consulting
POTOMAC
Potomac River watershed upstream of USGS gage 01646580.
Devereux Environmental Consulting
PATUXENT
Patuxent River watershed upstream of USGS gage 01594440.
Devereux Environmental Consulting
SUSQUEHANNA
Susquehanna River watershed upstream of USGS gage 01578310.
Devereux Environmental Consulting
JAMES
James River watershed upstream of USGS gage 02035000.
Devereux Environmental Consulting
RAPPAHANNOCK
Rappahannock River watershed upstream of USGS gage 01668000.
Devereux Environmental Consulting
PAMUNKEY
Pamunkey River watershed upstream of USGS gage 01673000.
Devereux Environmental Consulting
APPOMATTOX
Appomattox River watershed upstream of USGS gage 02041650.
Devereux Environmental Consulting
MATTAPONI
Mattaponi River watershed upstream of USGS gage 01674500.
Devereux Environmental Consulting
mass
Mass of constituent load (identified in the "Spec" column) delivered to stream in the land-river segment (identified in the "lrseg" column)
Chesapeake Bay Program
0.0
13944928.36
Identified in the "Unit" column
U.S. Geological Survey
GS ScienceBase
mailing address
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
United States
1-888-275-8747
sciencebase@usgs.gov
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Digital Data
https://doi.org/10.5066/P9OVU9PX
None
20200821
Olivia Devereux
Devereux Environmental Consulting
mailing and physical
9219 Mintwood Street
Silver Spring
Maryland
20901
United States
301-325-7449
olivia@devereuxconsulting.com
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
Record created using USGS Metadata Wizard tool. (https://github.com/usgs/fort-pymdwizard)