Entity_Type:
Entity_Type_Label: Delta_2020100818_Adv17_PCOI_line.shp
Entity_Type_Definition:
Shapefile of the probabilities of hurricane-induced coastal erosion, dune morphology, and hurricane hydrodynamic data for Hurricane Delta for NHC Advisory 17, October 08, 2020, 1800 Coordinated Universal Time (UTC).
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features; Polyline.
Attribute:
Attribute_Label: DHIGH
Attribute_Definition:
Elevation of dune crest, in meters, using the North American Vertical Datum of 1988 (NAVD88). Extracted from lidar surveys collected from September 2012 to October 2020.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.59721
Range_Domain_Maximum: 8.2126
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: DLOW
Attribute_Definition:
Elevation of the dune toe, in meters NAVD88. Extracted from lidar surveys collected from September 2012 to October 2020.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.83586
Range_Domain_Maximum: 3.1017
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: DHIrms
Attribute_Definition: Root mean square error of dune crest elevation measurements.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.013283
Range_Domain_Maximum: 3.0719
Attribute_Units_of_Measure: meters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: DLOrms
Attribute_Definition: Root mean square error of dune toe elevation measurements.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0084761
Range_Domain_Maximum: 1.0162
Attribute_Units_of_Measure: meters
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: RUNUP
Attribute_Definition: Wave runup water level.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.46191
Range_Domain_Maximum: 5.1474
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SETUP
Attribute_Definition: Wave setup water level.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.015782
Range_Domain_Maximum: 2.0782
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe10
Attribute_Definition:
Storm surge water level for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.701
Range_Domain_Maximum: 3.2102
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe10
Attribute_Definition:
Probability of collision for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.998649
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe10
Attribute_Definition:
Probability of overwash for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0e-06
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe10
Attribute_Definition:
Probability of inundation for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe10
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.77489
Range_Domain_Maximum: 5.155
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe10
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 10% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.2449
Range_Domain_Maximum: 8.2241
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe20
Attribute_Definition:
Storm surge water level for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.64
Range_Domain_Maximum: 2.6705
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe20
Attribute_Definition:
Probability of collision for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.989222
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe20
Attribute_Definition:
Probability of overwash for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0e-06
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe20
Attribute_Definition:
Probability of inundation for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.999999
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe20
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.71391
Range_Domain_Maximum: 4.6671
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe20
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 20% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.2043
Range_Domain_Maximum: 7.7363
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe30
Attribute_Definition:
Storm surge water level for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.54857
Range_Domain_Maximum: 2.319
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe30
Attribute_Definition:
Probability of collision for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.369106
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe30
Attribute_Definition:
Probability of overwash for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe30
Attribute_Definition:
Probability of inundation for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.999886
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe30
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.61014
Range_Domain_Maximum: 4.2889
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe30
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 30% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.1005
Range_Domain_Maximum: 7.3581
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe40
Attribute_Definition:
Storm surge water level for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.49525
Range_Domain_Maximum: 2.0168
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe40
Attribute_Definition:
Probability of collision for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.219444
Range_Domain_Maximum: 99.999988
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe40
Attribute_Definition:
Probability of overwash for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe40
Attribute_Definition:
Probability of inundation for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.996178
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe40
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.56089
Range_Domain_Maximum: 3.9084
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe40
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 40% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0513
Range_Domain_Maximum: 6.9776
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe50
Attribute_Definition:
Storm surge water level for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.49525
Range_Domain_Maximum: 1.7228
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe50
Attribute_Definition:
Probability of collision for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.219445
Range_Domain_Maximum: 99.999911
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe50
Attribute_Definition:
Probability of overwash for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.999997
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe50
Attribute_Definition:
Probability of inundation for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.932295
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe50
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.56089
Range_Domain_Maximum: 3.5927
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe50
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 50% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0513
Range_Domain_Maximum: 6.6618
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: SURGEe90
Attribute_Definition:
Storm surge water level for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: NOAA
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.49525
Range_Domain_Maximum: 0.76987
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: NOAA
Attribute:
Attribute_Label: PCOLe90
Attribute_Definition:
Probability of collision for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.775753
Range_Domain_Maximum: 99.99746
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: POVWe90
Attribute_Definition:
Probability of overwash for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 99.997946
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: PINDe90
Attribute_Definition:
Probability of inundation for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 90.338122
Attribute_Units_of_Measure: percent
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: MEANe90
Attribute_Definition:
Mean water level (surge + setup) for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.56089
Range_Domain_Maximum: 2.6853
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS
Attribute:
Attribute_Label: EXTREMEe90
Attribute_Definition:
Extreme water level (surge + runup) for probabilistic storm surge 90% exceedance value.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.0513
Range_Domain_Maximum: 5.7544
Attribute_Units_of_Measure: meters NAVD88
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition: Null value
Enumerated_Domain_Value_Definition_Source: USGS