20240628
14142000
1.0
FALSE
ChesFPP_Barriers_Virginia
002
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
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ArcGIS Metadata
1.0
ChesFPP_Prioritized_Barriers
vector digital data
Dam data for the Chesapeake Bay watershed. This data was originally compiled in 2017 from multiple state and federal sources and edited by The Nature Conservancy for use in the Chesapeake Fish Passage Prioritization project. These data were "snapped" to a modified (single-flowline, dendritic) version of the high-resolution (1:24,000) National Hydrography Dataset, so that the dam points are geometrically coincident with the stream lines. The data underwent several quality control checks to help ensure that dams are located in the proper location. These include identifying barriers within 100m of another barrier to flag potential duplicates and assessing barriers for similar names using fuzzy string matching. Barriers identified as potential duplicates were manually reviewed against current aerial imagery in ArcGIS Pro. IN the case of duplicates, one barrier was marked as a duplicate and the other retained for use in the analysis. Original Source data (2013). Originally compiled for The Nature Conservancy's Northeast Aquatic Connectivity project from the following sources:
• National Inventory of Dams. Washington, DC :US Army Corps of Engineers : Federal Emergency Management Agency. Accessed Feb 24, 2011
• DE: Delaware Dams: Phil Carpenter, Delaware Natural Resources and Environmental Control; personal communication April 13, 2009
• MD: Jim Thompson, Fish Passage Coordinator, Maryland Dept. of Natural Resources. Personal Communication June 9, 2009
• PA: Division of Dam Safety, Department of Environmental Protection; PA Fish and Boat Commission; PA Run of River database Accessed July 10, 2009
• VA: VA Dept. of Game and Inland Fisheries.> David Morton, GISP. Personal communication July 16, 2009
• WV: WV DNR: Wildlife Diversity and Technical Support Units; WV Non-coal dams, DMR Dams, NID dams: WV State GIS Data Clearinghouse: http://wvgis.wvu.edu/data/data.php; Brian Long personal communication September 14, 2009
• USGS Geographic Names Information System (GNIS); https://www.usgs.gov/tools/geographic-names-information-system-gnis Accessed Feb 20, 2010
2019 Version updates included individual review of barriers by members of the Chesapeake Fish Passage Workgroup via ArcGIS Online.
In the 2023 updates to the Chesapeake Fish Passage Prioritization tool (https://maps.tnc.org/chesfpp) these data were updated to include data from the following sources:
• Road-stream crossings that were rated as "severe" barriers from the North Atlantic Aquatic Connectivity Collaborative database (https://naacc.org)
• Dams that have been removed based on the USGS Dam Removal Information Portal (DRIP) database (https://data.usgs.gov/drip-dashboard/)Wieferich, D.J., Duda, J., Wright, J., Uribe, R., Beard J. 2021. drip-dashboard Version 2.3.2. U.S. Geological Survey software release. https://doi.org/10.5066/P9UNIWKF.
• Dams that have been removed based American Rivers' database (https://www.americanrivers.org/threats-solutions/restoring-damaged-rivers/dam-removal-map/). Rivers, American (2022): American Rivers Dam Removal Database. HTTPS://DOI.ORG/10.6084/M9.FIGSHARE.5234068.V2
Retrieved: 11:38, August 19, 2022.
• USGS fishways database (https://www.usgs.gov/data/fishway-structure-data-eastern-united-states)
• Publication Year 2022
• Title Fishway Structure Data in the Eastern United States
• DOI 10.5066/P9IB1GWS
• Authors Benjamin P Gressler, Alexander J Haro, John A Young
• Product Type Data Release
• Record Source USGS Digital Object Identifier Catalog
• USGS Organization Eastern Ecological Science Center
• Virginia Dept. of Conservation and Recreation. https://consapps.dcr.virginia.gov/arcgis/rest/services/AGOL/VFRIS_DamPoints/MapServer/0 Additional attributes provided by Arthur Kay, VA DCR. Personal communication August 17, 2022. • Individual dam updates based on the manual review of barriers by members of the Chesapeake Fish Passage Workgroup via ArcGIS Online.
Culvert data is primarily sourced from the North Atlantic Aquatic Connectivity Collaborative (NAACC): https://naacc.org/naacc_data_center_home.cfm These data are based on field surveys of road-stream crossings conducted by trained surveyors, then reviewed and submitted to the NAACC database. Surveyed culverts that are rated as 'Severe' barriers to aquatic connectivity were considered as barriers in the analysis.
Additional culvert data were obtained from Maryland DNR as part of the original dam data transfer. These culverts are generally lower in the system and were considered to be barriers to fish passage.
Barrier data for the Chesapeake Bay watershed. This data was compiled from multiple state and federal sources and edited by The Nature Conservancy for use in the Chesapeake Fish Passage Prioritization project. These data were "snapped" to a modified (single-flowline, dendritic) version of the high-resolution (1:24,000) National Hydrography Dataset, so that the dam points are geometrically coincident with the stream lines. The data underwent several quality control checks to help ensure that dams are located in the proper location.
Dams and other anthropogenic barriers to fish passage in the Chesapeake Bay watershed. Compiled by The Nature Conservancy for the Chesapeake Fish Passage Prioritization project. See https://maps.tnc.org/chesfpp
Erik Martin
The Nature Conservancy
207-607-4826
emartin@tnc.org
Erik Martin
The Nature Conservancy
207-607-4826
emartin@tnc.org
dam
barrier
fish passage
Chesapeake
inlandWaters
environment
ISO 19115 Topic Categories
dam
barrier
fish passage
Chesapeake
inlandWaters
environment
The Nature Conservancy (TNC) developed these data and reserves all rights in the data provided. All data are provided as is. TNC makes no warranty as to the currency, completeness, accuracy or utility of any specific data. Data are for informational purposes and are not suitable for legal, engineering, or surveying purposes. Data do not represent an on-the-ground survey and represent only the approximate relative location of feature boundaries. TNC is not obligated to update/maintain the data to reflect changing conditions. This disclaimer applies both to individual use of the data and aggregate use with other data. TNC shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Commercial use is prohibited. Any sale, commercial distribution, loan, or offering for use of these digital data, in whole or in part, or the use of these data to produce other GIS products and services with the intent to sell for a profit, is prohibited without the prior written consent of The Nature Conservancy (TNC).
This data is freely distributable without permission from The Nature Conservancy (TNC). Sharing or redistribution of the data (sub-licensing) is allowed, provided all accompanying metadata as well as these Terms of Use are provided unaltered alongside the data.
The Nature Conservancy (TNC) shall be acknowledged as data contributors to any reports or other products derived from these data. These data should be cited using the language of the Data Set Credit. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data.
true
-80.429905
-75.360523
41.994873
36.712061
Esri ArcGIS 13.1.3.41833
The Nature Conservancy (TNC) created this data set from the manipulation, analysis, and/or synthesis of publicly available data sources. Commercial use of this data set is prohibited. This data set must be cited on all electronic and hard copy products using the language of the Data Set Credit.
The Nature Conservancy reserves all rights in data provided. All data are provided as is. This is not a survey quality dataset. The Nature Conservancy makes no warranty as to the currency, completeness, accuracy or utility of any specific data. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data.
0
ChesFPP_Prioritized_Dams
Feature Class
0
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
0
0
UNIQUE_ID
Unique identifier assigned in the Chesapeake Fish Passage Prioritization Project
UNIQUE_ID
String
50
0
0
WATERSHED
The watershed in which the dam is found.
WATERSHED
String
50
0
0
PO_NAME
Town name obtained from ZIP code overlay
PO_NAME
String
255
0
0
NESZCL
Size class of river based on Northeast Aquatic Stream Classification project
1a
Headwaters: Drainage area 0 - 3.861 sqmi
1b
Creeks: Drainage area 3.861 - 38.61 sqmi
2
Small Rivers: Drainage area 38.61 - 200 sqmi
3a
Medium Tributary Rivers: Drainage area 200 - 1000 sqmi
3b
Medium Mainstem Rivers: Drainage area1000-3861 sqmi
4
Large Rivers: Drainage area 3861-9653 sqmi
5
Great Rivers: Drainage area >9653 sqmi
NESZCL
String
255
0
0
STATE
State in which dam is located
STATE
String
255
0
0
WATERBODY
Waterbody which the dam is on, as indicated in the source dam data
WATERBODY
String
255
0
0
Latit
Latitude of the dam
Latit
Double
8
0
0
HUC8
The 8-digit hydrologic unit code watershed that the dam is within.
HUC8
String
255
0
0
PurposeCategory
Purpose Category
Integer
4
0
0
ConstructionMaterial
Construction Material
SmallInteger
2
0
0
PassageFacility
Passage Facility?
Integer
4
0
0
HUC8_NAME
The name of the 8-digit hydrologic unit code watershed that the dam is within.
HUC8_Name
String
255
0
0
HUC6
The 6-digit hydrologic unit code watershed that the dam is within.
HUC6
String
255
0
0
HUC4_NAME
The name of the 4 8-digit hydrologic unit code watershed that the dam is within.
HUC4_Name
String
255
0
0
OtherPassYear
The year fish passage was provided (other than via dam removal).
OtherPassYear
Integer
4
0
0
DamRemovalPassYear
The year the dam was removed.
DamRemovalPassYear
Integer
4
0
0
NIDIDsourc
NIDIDsourc
String
25
0
0
Comment
Comment
String
200
0
0
HUC12_NAME
The name of the 12-digit hydrologic unit code watershed that the dam is within.
HUC12_Name
String
255
0
0
HUC10
The 10-digit hydrologic unit code watershed that the dam is within.
HUC10
String
255
0
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
HUC10_NAME
The name of the 10-digit hydrologic unit code watershed that the dam is within.
HUC10_Name
String
255
0
0
STATE_ID
ID from the source dataset
STATE_ID
String
16
0
0
Type
The barrier type (e.g. dam or road-stream crossing)
Type
String
255
0
0
NIDID
National Inventory of dams ID
NIDID
String
20
0
0
Longit
Longitude of the dam
Longit
Double
8
0
0
batUSNetID
Functional river network ID upstream of the barrier
batUSNetID
Integer
4
0
0
batRel
batRel
Double
8
0
0
batDSNetID
Functional river network ID downstream of the barrier
batDSNetID
Integer
4
0
0
batFuncUS
Length of the functional network upstream of a barrier. The functional network is defined by those sections of river that a fish could theoretically access from any other point within that functional network. Its terminal ends are barriers, headwaters, and/or the river mouth. Unit: meters. See Metric_Glossary.pdf for more details on this attribute.
batFuncUS
Double
8
0
0
batFuncDS
Length of the functional network downstream of a barrier. The functional network is defined by those sections of river that a fish could theoretically access from any other point within that functional network. Its terminal ends are barriers, headwaters, and/or the river mouth. Unit: meters. See Metric_Glossary.pdf for more details on this attribute.
batFuncDS
Double
8
0
0
batTotUSDS
Summed length of the upstream and downstream functional networks of a barrier. The functional network is defined by those sections of river that a fish could theoretically access from any other point within that functional network. Its terminal ends are barriers, headwaters, and/or the river mouth. Unit: meters. See Metric_Glossary.pdf for more details on this attribute.
batTotUSDS
Double
8
0
0
batAbs
This metric is the minimum of the two functional networks of a barrier. For example if the upstream functional network was 10 kilometers and downstream functional network was 5 kilometers, then the Absolute Gain will be 5 kilometers. Unit: meters. Values for this metric can change depending on the barrier severity iteration. See Metric_Glossary.pdf for more details on this attribute.
batAbs
Double
8
0
0
batLenUS
Total length of river network upstream of a given barrier, regardless of any upstream barriers. Unit: meters. See Metric_Glossary.pdf for more details on this attribute.
batLenUS
Double
8
0
0
batCountUS
The number of barriers upstream of a given barrier. Includes natural waterfalls, which are included in network generation. Does not include barriers excluded from network generation. See Metric_Glossary.pdf for more details on this attribute.
batCountUS
SmallInteger
2
0
0
batDis2Mth
batDis2Mth
Double
8
0
0
batUSDnsty
The density of barriers upstream. Unit: count/m. See Metric_Glossary.pdf for more details on this attribute.
batUSDnsty
Double
8
0
0
batCountDS
The number of barriers downstream of a given barrier. Includes natural waterfalls, which are included in network generation. Does not include barriers excluded from network generation. See Metric_Glossary.pdf for more details on this attribute.
batCountDS
SmallInteger
2
0
0
DSFalls
Count of natural barriers downstream of a barrier. See Metric_Glossary.pdf for more details on this attribute.
DSFalls
SmallInteger
2
0
0
DSHydro
Count of hydropower facilities downstream of a barriers. See Metric_Glossary.pdf for more details on this attribute.
DSHydro
SmallInteger
2
0
0
DSPassage
Count of downstream fish passage facilities downstream of a barrier. See Metric_Glossary.pdf for more details on this attribute.
DSPassage
SmallInteger
2
0
0
HUC6_NAME
The name of the 6-digit hydrologic unit code watershed that the dam is within.
HUC6_Name
String
255
0
0
DAM_NAME
The dam name from the source data
DAM_NAME
String
200
0
0
DAM_NAME2
Alternate dam name
DAM_NAME2
String
200
0
0
Source
Source of the dam data
Source
String
150
0
0
HUC4
The 4-digit hydrologic unit code watershed that the dam is within.
HUC4
String
255
0
0
HUC12
The name of the 12-digit hydrologic unit code watershed that the dam is within.
HUC12
String
255
0
0
GRADIENT
GRADIENT
Double
8
0
0
ABOVE10PERC
ABOVE10PERC
SmallInteger
2
0
0
TotDASqKM
Total upstream drainage area in square kilometers. See Metric_Glossary.pdf for more details on this attribute.
TotDASqKM
Double
8
0
0
onConsLand
Barrier is located on conservation land. Based on TNC’s 2014 Eastern Division secured areas database. Includes conserved lands in GAP Status 1, 2, and 3 that do not have parcel-level restrictions on data distribution. Unit: Boolean. See Metric_Glossary.pdf for more details on this attribute.
onConsLand
SmallInteger
2
0
0
usCons100
% conserved land in a 100m buffer of the upstream functional river network. Based on TNC’s 2014 Eastern Division secured areas database. Includes conserved lands in GAP Status 1, 2, and 3 that do not have parcel-level restrictions on data distribution. See Metric_Glossary.pdf for more details on this attribute.
usCons100
Double
8
0
0
dsCons100
% conserved land in a 100m buffer of the downstream functional river network. Based on TNC’s 2014 Eastern Division secured areas database. Includes conserved lands in GAP Status 1, 2, and 3 that do not have parcel-level restrictions on data distribution. See Metric_Glossary.pdf for more details on this attribute.See Metric_Glossary.pdf for more details on this attribute.
dsCons100
Double
8
0
0
usBuffAreaM2
usBuffAreaM2
Double
8
0
0
usConsAreaM2
usConsAreaM2
Double
8
0
0
dsBuffAreaM2
dsBuffAreaM2
Double
8
0
0
dsConsAreaM2
dsConsAreaM2
Double
8
0
0
MiNewSzCl
MiNewSzCl
Double
8
0
0
RelGainMi
RelGainMi
Double
8
0
0
TotNumSzCl
Number of unique stream size classes >0.5 miles in total upstream and downstream functional networks. See Metric_Glossary.pdf for more details on this attribute.
TotNumSzCl
SmallInteger
2
0
0
usNumSzCl
Number of unique stream size classes >0.5 miles in upstream functional network. See Metric_Glossary.pdf for more details on this attribute.
usNumSzCl
SmallInteger
2
0
0
usSzClGn
Number of upstream stream size classes . Stream segments must be >0.5 miles to be considered a gain and the size class must not be present in the downstream functional network. See Metric_Glossary.pdf for more details on this attribute.
usSzClGn
SmallInteger
2
0
0
NESZCL_Int
An integer representation of the NESZCL attribute. See Metric_Glossary.pdf for more details on this attribute.
NESZCL_Int
SmallInteger
2
0
0
DSALEWIFE
Presence of alewife downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 1a+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSALEWIFE
SmallInteger
2
0
0
DSBLUEBACK
Presence of blueback herring downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 1a+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSBLUEBACK
SmallInteger
2
0
0
DSAMSHAD
Presence of American shad downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 2+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSAMSHAD
SmallInteger
2
0
0
DSHICKSHAD
Presence of hickory shad downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 2+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSHICKSHAD
SmallInteger
2
0
0
DSSTRBASS
Presence of striped bass downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 3b+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSSTRBASS
SmallInteger
2
0
0
DSATLSTUR
Presence of Atlantic sturgeon downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 4+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSATLSTUR
SmallInteger
2
0
0
DSSHRTSTUR
Presence of shortnose sturgeon downstream of barrier. Based on: Documented habitat in some portion of the Barrier’s downstream functional network AND Barrier is on a stream that is likely to support that species based on stream size 4+ (Size class from the NE Aquatic Habitat Classification, as represented in the NESZCL field). See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSSHRTSTUR
SmallInteger
2
0
0
DSAMEEL
Presence of American eel downstream of barrier. No size class restrictions. See Metric_Glossary.pdf for more details on this attribute.
0
None Documented
1
Current Presence
2
Potential Current Presence
3
Historical Presence
DSAMEEL
SmallInteger
2
0
0
QDSANAD
Presence of habitat for 1 or more of the anadromous species included in this analysis based on the data and methods described for each species: alewife, blueback herring, American shad, hickory shad, striped bass, Atlantic sturgeon, shortnose sturgeon (American eel NOT included in this metric). Habitat for each species is coded as “Current”, "Potential Current", “Historical”, or “None Documented”. If current and historical habitat are documented in the downstream functional network for different species, the current habitat trumps the historical habitat. So if alewife habitat is “Current”, American shad habitat is “Historical” this metric will be “Current”, indicating that habitat for 1 or more anadromous species is currently documented in the Barriers downstream network (based on the methods described for each species). Unit: Boolean See Metric_Glossary.pdf for more details on this attribute.
QDSANAD
SmallInteger
2
0
0
QDSNUMDIAD
The number of diadromous species with documented current habitat in the downstream functional network of each barrier based on the data and methods described for each species: alewife, blueback herring, American shad, hickory shad, striped bass, shortnose sturgeon, Atlantic sturgeon, American eel. Unit: Boolean See Metric_Glossary.pdf for more details on this attribute.
QDSNUMDIAD
SmallInteger
2
0
0
usUnsnapDens
usUnsnapDens
Double
8
0
0
dsUnsnapDens
dsUnsnapDens
Double
8
0
0
in_EBTJV_2012
Barrier within an NHD catchment occupied by trout based on Eastern Brook Trout Joint Venture (EBTJV) data. (Mark Hudy 2012) See Metric_Glossary.pdf for more details on this attribute.
in_EBTJV_2012
SmallInteger
2
0
0
in_deWeberTrout
Barrier within a catchment with modeled brook trout occupancy. (DeWeber and Wagner 2015) https://www.tandfonline.com/doi/abs/10.1080/00028487.2014.963256 See Metric_Glossary.pdf for more details on this attribute.
in_deWeberTrout
SmallInteger
2
0
0
US_EBTJV_2012
US_EBTJV_2012
SmallInteger
2
0
0
DS_EBTJV_2012
DS_EBTJV_2012
SmallInteger
2
0
0
block_EBTJV_2012
NHD catchments occupied by trout are in one of a barriers functional networks – either upstream or downstream, but not both. Based on 2012 EBTJV data (http://easternbrooktrout.org/news/news-inbox/ebtjv-salmonid-catchment-assessment-and-habitat-patch-layers). Unit: Boolean. See Metric_Glossary.pdf for more details on this attribute.
block_EBTJV_2012
SmallInteger
2
0
0
US_deWeberTrout
US_deWeberTrout
SmallInteger
2
0
0
DS_deWeberTrout
DS_deWeberTrout
SmallInteger
2
0
0
block_BT_DeWeber
NHD catchments occupied by trout are in one of a barriers functional networks – either upstream or downstream, but not both. Based on DeWeber and Wagner 2015 data (http://www.tandfonline.com/doi/abs/10.1080/00028487.2014.963256). Catchments occupied by brook trout identified using the “occur46” scenario from DeWeber and Wagner 2015: a binary classification (1 = present; 0 = absent) of Brook Trout occurrence based on a threshold that was equal to prevalence in the training data set, which produces near-optimal classification accuracy and could be used when false positives and false negatives have equal costs. Unit: Boolean. See Metric_Glossary.pdf for more details on this attribute.
block_BT_DeWeber
SmallInteger
2
0
0
usMiCold
usMiCold
Double
8
0
0
dsMiCold
dsMiCold
Double
8
0
0
usMiCool
usMiCool
Double
8
0
0
dsMiCool
dsMiCool
Double
8
0
0
totMiCold
Miles of Cold Water habitat in the total functional network of a barrier. Cold water habitat data from the Northeast Aquatic Habitat Classification(http://rcngrants.org/content/northeastern-aquatic-habitat-classification-project). Unit: Miles. See Metric_Glossary.pdf for more details on this attribute.
totMiCold
Double
8
0
0
totMiCC
Miles of Cold or Cool Water habitat in the total functional network of a barrier. Cold water habitat data from the Northeast Aquatic Habitat Classification(http://rcngrants.org/content/northeastern-aquatic-habitat-classification-project). Unit: Miles. See Metric_Glossary.pdf for more details on this attribute.
totMiCC
Double
8
0
0
fishRich
Number of current native fish species richness in the watershed within which the barrier is located. Based on NatureServe (http://www.natureserve.org/) watershed (8-digit HUC) data. See Metric_Glossary.pdf for more details on this attribute.
fishRich
SmallInteger
2
0
0
g123Fish
Number of rare (G1-G3)fish species in the watershed within which the barrier is located. Based on NatureServe (http://www.natureserve.org/) watershed (8-digit HUC) data. See Metric_Glossary.pdf for more details on this attribute.
g123Fish
SmallInteger
2
0
0
g123Mussel
Number of rare (G1-G3) mussel species in the watershed within which the barrier is located. Based on NatureServe (http://www.natureserve.org/) watershed (8-digit HUC) data. See Metric_Glossary.pdf for more details on this attribute.
g123Mussel
SmallInteger
2
0
0
g123Cray
Number of rare (G1-G3) crayfish species in the watershed within which the barrier is located. Based on NatureServe (http://www.natureserve.org/) watershed (8-digit HUC) data. See Metric_Glossary.pdf for more details on this attribute.
g123Cray
SmallInteger
2
0
0
usXingDen
Desnity of road-stream crossings in the local watershed of the upstream functional river network. Unit: #/m2. See Metric_Glossary.pdf for more details on this attribute.
usXingDen
Double
8
0
0
dsXingDen
Desnity of road-stream crossings in the local watershed of the downstream functional river network. Unit: #/m2. See Metric_Glossary.pdf for more details on this attribute.
dsXingDen
Double
8
0
0
usSmDamDen
Desnity of dams which are not on the project hydrography (e.g. off channel farm ponds) in the local watershed of the upstream functional river network. Unit: #/m2. See Metric_Glossary.pdf for more details on this attribute.
usSmDamDen
Double
8
0
0
dsSmDamDen
Desnity of dams which are not on the project hydrography (e.g. off channel farm ponds) in the local watershed of the downstream functional river network. Unit: #/m2. See Metric_Glossary.pdf for more details on this attribute. See Metric_Glossary.pdf for more details on this attribute.
dsSmDamDen
Double
8
0
0
TierAnadromous
The final tiered priority score for anadromous fish. Tiers are derived by binning the sequential scores into 20 bins.
TierAnadromous
SmallInteger
2
0
0
TierResident
The final tiered priority score for resident fish. Tiers are derived by binning the sequential scores into 20 bins.
TierResident
SmallInteger
2
0
0
TierBKT
The final tiered priority score for brook trout. Tiers are derived by binning the sequential scores into 20 bins.
TierBKT
SmallInteger
2
0
0
File Geodatabase Feature Class
dataset
EPSG
6.18.3(9.3.1.2)
Simple
FALSE
0
TRUE
FALSE