데이터셋 상세
미국
Allegheny County Hydrology Lines
,The Hydrology Feature Dataset contains photogrammetrically compiled water drainage features and structures including rivers, streams, drainage canals, locks, dams, lakes, ponds, reservoirs and mooring cells. Rivers, Lakes, Ponds, Reservoirs, Hidden Lakes, Reservoirs or Ponds: If greater than 25 feet and less than 30 feet wide, is captured as a double line stream. If greater than 30 feet wide it is captured as a river. Lakes are large standing bodies of water greater than 5 acres in size. Ponds are large standing bodies of water greater than 1 acre and less than 5 acres in size. Polygons are created from Stream edges and River Edges. The Ohio River, Monongahela River and Allegheny River are coded as Major Rivers. All other River and Stream polygons are coded as River. If a stream is less than 25 feet wide it is placed as a single line and coded as a Stream. Both sides of the stream are digitized and coded as a Stream for Streams whose width is greater than 25 feet. River edges are digitized and coded as River. A Drainage Canal is a manmade or channelized hydrographic feature. Drainage Canals are differentiated from streams in that drainage canals have had the sides and/or bottom stabilized to prevent erosion for the predominant length of the feature. Streams may have had some stabilization done, but are primarily in a natural state. Lakes are large standing bodies of water greater than five acres in size. Ponds are large standing bodies of water greater than one acre in size and less than five acres in size. Reservoirs are manmade embankments of water. Included in this definition are both covered and uncovered water tanks. Reservoirs that are greater than one acre in size are digitized. Hidden Streams, Hidden Rivers and Hidden Drainage Canal or Culverts are those areas of drainage where the water flows through a manmade facility such as a culvert. Hydrology Annotation is not being updated but will be preserved. If a drainage feature has been removed, as apparent on the aerial photography, the associated drainage name annotation will be removed. A Mooring Cell is a structure to which tows can tie off while awaiting lockage. They are normally constructed of concrete and steel and are anchored to the river bottom by means of gravity or sheet piling. Mooring Cells do not currently exist in the Allegheny County dataset but will be added. Locks are devices that are used to control flow or access to a hydrologic feature. The edges of the Lock are captured. Dams are devices that are used to hold or delay the natural flow of water. The edges of the Dam are shown.,If viewing this description on the Western Pennsylvania Regional Data Center’s open data portal (http://www.wprdc.org), this dataset is harvested on a weekly basis from Allegheny County’s GIS data portal (http://openac.alcogis.opendata.arcgis.com/). The full metadata record for this dataset can also be found on Allegheny County’s GIS portal. You can access the metadata record and other resources on the GIS portal by clicking on the “Explore” button (and choosing the “Go to resource” option) to the right of the “ArcGIS Open Dataset” text below.,Category: Environment,Organization: Allegheny County,Department: Geographic Information Systems Group; Department of Administrative Services,Temporal Coverage: 2006,Data Notes:,Coordinate System: Pennsylvania State Plane South Zone 3702; U.S. Survey Foot,Development Notes: Original Lakes and Drainage datasets combined to create this layer. Data was updated as a result of a flyover in the spring of 2004. A database field has been defined for all map features named "Update Year". This database field will define which dataset provided each map feature. Map features from the current map will be set to "2004". The earlier dataset map features the earlier dataset map features used to supplement the area near the county boundary will be set to "1993". All new or modified map data will have the value for "Update Year" set to "2004".,Other:
데이터 정보
연관 데이터
Hydrologic characteristics and water quality of headwater streams and wetlands at the Allegheny Portage Railroad National Historic Site, Summit area, Blair and Cambria Counties, Pennsylvania, 2014-2016
공공데이터포털
This data release reports water-quantity and water-quality data collected during 2014-2016 by the U.S. Geological Survey (USGS) and in cooperation with the National Park Service (NPS) at the Allegheny Portage Railroad National Historic Site (ALPO) in Blair and Cambria Counties, Pennsylvania (figure 1). These data establish a base-line for current hydrologic conditions and may be helpful to evaluate potential changes in the hydrologic characteristics of streams and associated wetlands at the ALPO Summit area (figure 2). The data are summarized in the interpretive report, “Hydrologic Characteristics and Water Quality of Headwater Streams and Wetlands at the Allegheny Portage Railroad National Historic Site, Summit Area, Blair and Cambria Counties, Pennsylvania, 2014-2016” by Cravotta and others (in review). During 2014-2016, synoptic surveys were conducted by the USGS, with assistance from NPS, to obtain data on stream flow or stage and the corresponding water quality over a range of hydrologic conditions at 10 monitoring sites (table 1, figure 2). The synoptic surveys typically included measurements of the water level at piezometers and stream gages, plus stream flow at the gages and associated tributary, seepage, or wetland sites. The daily values for data on stream stage (table 2) and piezometer water-level altitude (table 3) and water temperature (table 4) plus the corresponding daily precipitation and air-temperature data for PA13 (table 5) are summarized for this data release and presented with interpretations in the report by Cravotta and others (in review).
Hydrologic characteristics and water quality of headwater streams and wetlands at the Allegheny Portage Railroad National Historic Site, Summit area, Blair and Cambria Counties, Pennsylvania, 2014-2016
공공데이터포털
This data release reports water-quantity and water-quality data collected during 2014-2016 by the U.S. Geological Survey (USGS) and in cooperation with the National Park Service (NPS) at the Allegheny Portage Railroad National Historic Site (ALPO) in Blair and Cambria Counties, Pennsylvania (figure 1). These data establish a base-line for current hydrologic conditions and may be helpful to evaluate potential changes in the hydrologic characteristics of streams and associated wetlands at the ALPO Summit area (figure 2). The data are summarized in the interpretive report, “Hydrologic Characteristics and Water Quality of Headwater Streams and Wetlands at the Allegheny Portage Railroad National Historic Site, Summit Area, Blair and Cambria Counties, Pennsylvania, 2014-2016” by Cravotta and others (in review). During 2014-2016, synoptic surveys were conducted by the USGS, with assistance from NPS, to obtain data on stream flow or stage and the corresponding water quality over a range of hydrologic conditions at 10 monitoring sites (table 1, figure 2). The synoptic surveys typically included measurements of the water level at piezometers and stream gages, plus stream flow at the gages and associated tributary, seepage, or wetland sites. The daily values for data on stream stage (table 2) and piezometer water-level altitude (table 3) and water temperature (table 4) plus the corresponding daily precipitation and air-temperature data for PA13 (table 5) are summarized for this data release and presented with interpretations in the report by Cravotta and others (in review).
Hydrogeologic section lines in valleys of the Oneonta area, New York
공공데이터포털
This child item dataset contains a shapefile of the locations of cross-section lines used to depict the hydrogeology in the Oneonta, NY area.
Hydrogeologic section lines in valleys of the Oneonta area, New York
공공데이터포털
This child item dataset contains a shapefile of the locations of cross-section lines used to depict the hydrogeology in the Oneonta, NY area.
Hydrogeologic section lines in the Owasco Inlet Watershed, Cayuga and Tompkins Counties, New York
공공데이터포털
This child item dataset contains a shapefile that delineates traces of hydrogeologic sections illustrated in Heisig, 2023 (figure 3, plate 1). The "Section_id" attribute lists letter-number designations of each section. A separate shapefile in this Data Release contains the map labels for the hydrogeologic sections in the format x - x'. By convention, the x is on the west side and the x' is on the east side of generally horizontal sections. In generally vertical sections, the x is the westernmost of the section ends and the x' is the eastermost end of the section line.
Hydrogeologic section lines in the Owasco Inlet Watershed, Cayuga and Tompkins Counties, New York
공공데이터포털
This child item dataset contains a shapefile that delineates traces of hydrogeologic sections illustrated in Heisig, 2023 (figure 3, plate 1). The "Section_id" attribute lists letter-number designations of each section. A separate shapefile in this Data Release contains the map labels for the hydrogeologic sections in the format x - x'. By convention, the x is on the west side and the x' is on the east side of generally horizontal sections. In generally vertical sections, the x is the westernmost of the section ends and the x' is the eastermost end of the section line.
Potentiometric Surface Contours of the Lloyd and North Shore Aquifers, April-May 2013
공공데이터포털
This polyline shapefile consists of digital contours that represent the potentiometric-surface altitude of water in the Lloyd and contiguous North Shore aquifer beneath Long Island, New York. The U.S. Geological Survey constructed a potentiometric-surface altitude map using ground-water levels measured in the Lloyd and North Shore aquifers during the spring of 2013. Contours were constructed at a scale of 1:125,000 from water-level data collected at 66 groundwater monitoring wells. The potentiometric-surface altitude contours were digitized and compared to 1997, 2006, and 2010 potentiometric-surface altitude maps. The contours range from -10 to 60 feet at 5 foot intervals above and below the National Geodetic Vertical Datum of 1929. This polyline shapefile is a digital representation of the potentiometric-surface contours presented in sheet 3 of Scientific Investigations Map 3326.
Potentiometric Surface Contours of the Lloyd and North Shore Aquifers, April-May 2013
공공데이터포털
This polyline shapefile consists of digital contours that represent the potentiometric-surface altitude of water in the Lloyd and contiguous North Shore aquifer beneath Long Island, New York. The U.S. Geological Survey constructed a potentiometric-surface altitude map using ground-water levels measured in the Lloyd and North Shore aquifers during the spring of 2013. Contours were constructed at a scale of 1:125,000 from water-level data collected at 66 groundwater monitoring wells. The potentiometric-surface altitude contours were digitized and compared to 1997, 2006, and 2010 potentiometric-surface altitude maps. The contours range from -10 to 60 feet at 5 foot intervals above and below the National Geodetic Vertical Datum of 1929. This polyline shapefile is a digital representation of the potentiometric-surface contours presented in sheet 3 of Scientific Investigations Map 3326.
Hydrographic Datasets for Hydrologic Unit 02050107 - Upper Susquehanna-Lackawanna
공공데이터포털
The Chesapeake Bay Hyper-Resolution Hydrography Database is intended to facilitate analysis of the landscape in the Chesapeake Bay watershed through identification of headwater and other low-order streams or drainage features (e.g. ditches) that, to date, may be absent from existing hydrography data products. A full description of the methodology and accuracy assessment is provided in the accompanying report titled: "Hydrography Mapping Supporting Modeling and Targeted Conservation: Project Overview and Lessons Learned". The data products were developed by the Chesapeake Conservancy and the University of Maryland Baltimore County (UMBC) as part of a 6-year Cooperative Agreement between the Chesapeake Conservancy and the U.S. Environmental Protection Agency (EPA) and a separate Interagency Agreement between the USGS and the EPA to provide geospatial support to the Chesapeake Bay Program Office. The data release is structured by eight-digit level hydrologic unit codes (HUC8) for the Chesapeake Bay watershed. Each HUC8 contains seven files (see below) and uses the following nomenclature: where HUC_ID and WATERSHED_NAME are placeholders for HUC8 ID(s), and local watershed name(s) (e.g., "Hydrographic Datasets for Hydrologic Unit 02050101 - Upper Susquehanna") Data Release Structure: Project Overview and Lessons Learned.pdf (Project overivew, methodology and accuracy assessment) huc_[HUC_ID]_streamLine.zip (Stream Lines) huc_[HUC_ID]_streamPoly.zip (Stream Polygons) huc_[HUC_ID]_agDitches.zip (Agricultural Ditches) huc_[HUC_ID]_rdDitches.zip (Road Ditches) huc_[HUC_ID]_geomorphon1m.tif (Geomorphon 1-meter) huc_[HUC_ID]_geomorphon10m.tif (Geomorphon 10-meter) metadata_[HUC_ID].xml (metadata xml)
Hydrography Lines 2019
공공데이터포털
,
목록