• Identification Information
• Data Quality Information
• Spatial Data Organization Information
• Spatial Reference Information
• Entity and Attribute Information
• Distribution Information
• Metadata Reference Information

Identification Information:

Citation

Citation Information

Originator: New York State Adirondack Park Agency

Originator: Daniel M. Spada, Project Director (compiler)

Publication Date: 20001229

Title: Watershed Boundaries of Large Wetland Complexes in the St. Regis River Basin

Edition: Version 1.0

Geospatial Data Presentation Form: map

Series Information:

Series Name: Watershed Scale Protection for Adirondack Wetlands

Issue Identification: Watershed Protection of the St. Lawrence River Watershed with Special Consideration to Large Wetlands and Large Landownership - Part I.

Publication Information:

Publication Place: Ray Brook, NY

Publisher: New York State Adirondack Park Agency

Description

Abstract: An Arc/Info coverage was prepared containing the watershed boundaries of the four largest peatland complexes in the St. Regis River Basin, located in northern New York State for the New York State Adirondack Park Agency (APA). The four wetlands were: Madawaska Wetland, Spring Pond Bog, Waverly Bog, and Osgood River Muskeg. Watershed boundaries were delineated using USGS National Aerial Photography Program 1:40000 scale color infrared aerial photos. For some wetlands, such as Osgood River Muskeg, flowing water bisected the wetland. In this case, it was decided that the detailed watersheds of the wetland should be delineated separately for each portion since their upslope contributing areas were different, even though the river they both flow into was the same. Watershed boundaries originated at the bog mat pour point, of which there could be many in the case of a raised peatland. The detailed watersheds of large wetlands were mapped independently by two people, compared and verified by a third, transferred to a 1:24,000-scale basemap and digitized.

Purpose: The final detailed watershed maps illustrated the hydrologic relationships between large wetlands and the surrounding landscape. Used as an overlay on other datasets to characterize watershed attributes, and for attribution of water quality data associated with peatland systems.

Supplemental Information: The data set was heads-up digitized using ArcView 3.2 from scanned and georeferenced bitmap images of photocopied United States Geological Survey (USGS) 1:24,000 anc 1:25,000 scale maps. The data were brought into Arc/Info v8.0 and built as a coverage with polygon topology. Labels were added to identify the wetland each watershed was associated with.

Time Period of Content

Time Period Information

Range of Dates/Times

Beginning Date: 19940514

Ending Date: 19970502

Currentness Reference: imagery date

Status

Progress: Complete

Maintenance and Update Frequency: As needed

Time Period of Content

Time Period Information

Range of Dates/Times

Beginning Date: 1964

Ending Date: 1979

Currentness Reference: USGS 7.5' and 7.5' X 15' topographic quadrangle publication dates

Status

Progress: Complete

Maintenance and Update Frequency: As needed

Spatial Domain

Bounding Coordinates

West Bounding Coordinate: -74.5251

East Bounding Coordinate: -74.2066

North Bounding Coordinate: 44.5237

South Bounding Coordinate: 44.3508

Keywords

Theme

Theme Keyword Thesaurus: None

Theme Keyword: Watersheds

Theme Keyword: Peatland drainage basin

Theme Keyword: Geographic Information System (GIS)

Theme Keyword: Arc/Info Coverage

Place

Place Keyword Thesaurus: Geographic Names Information System

Place Keyword: New York

Place Keyword: Adirondack Park

Place Keyword: Adirondack Mountains

Place Keyword: St. Regis River Drainage Basin

Place Keyword: St. Regis River

Place Keyword: Madawaska Wetland

Place Keyword: Spring Pond Bog

Place Keyword: Osgood River Muskeg

Place Keyword: Waverly Bog

Stratum

Stratum Keyword Thesaurus: None

Temporal

Temporal Keyword Thesaurus: None

Temporal Keyword: Date of topographic maps: 1964-1979

Temporal Keyword: Date of Aerial Photography: 1994-1997

Access Constraints: None

Use Constraints: These data may not be used for legal determinations. Please credit use of this data set to the New York State Adirondack Park Agency, Ray Brook, New York 12977. Please send a copy of any reports or papers in which these data were used or referenced to the above address, Attention, Nancy Heath Librarian.

Point of Contact

Contact Organization Primary

Contact Organization: NYS Adirondack Park Agency

Contact Person: Mr. Daniel M. Spada

Contact Position: Adirondack Park Project Analyst, Biological Resources

Contact Address

Address Type: mailing and physical address

Address: PO Box 99, Route 86

City: Ray Brook

State or Province: New York

Postal Code: 12977

Country: USA

Contact Voice Telephone: (518) 891-4050

Contact Facsimile Telephone: (518) 891-3938

Hours of Service: 9:00 AM - 5:00 PM Monday through Friday

Browse Graphic: None

Data Set Credit: Funding was provided by the US Environmental Protection Agency Office of Wetlands Protection; State Wetlands Protection Program; Project #CD992441-01-0 to the NYS Adirondack Park Agency (NYS APA). Subcontractors for portions of the grant were the Remote Sensing Laboratory, Plattsburgh State University (RSL), the Adirondack Lakes Survey Corporation of the NYS Department of Environmental Conservation (ALSC), and the Adirondack Nature Conservancy and Land Trust (ANCLT).

Security Information

Security Classification System: None

Security Classification: Unclassified

Security Handling Description: None

Native Data Set Environment: PC-Arc/Info, Arc/Info

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Data Quality Information

Attribute Accuracy

Attribute Accuracy Report: Polygon attributes consist of polygon ID#, area, perimeter, and associated wetland name.

Quantitative Attribute Accuracy Assessment

Attribute Accuracy Value: unknown

Attribute Accuracy Explanation: All feature attributes are believed to be correct.

Logical Consistency Report:

Completeness Report: Extensive quality assurance/quality control measures were taken for all steps of dataset creation. It is expected however, that because the watersheds were delineated from USGS topographic maps taped together (because some of the wetlands occurred at the edges or corners of the quads), some positional errors occurred. Identifiable errors will be corrected periodically or as needed.

Positional Accuracy

Horizontal Positional Accuracy

Horizontal Positional Accuracy Report: RMS error thresholds were not an option in the creation of this dataset because it was heads-up digitized in ArcView.

Horizontal Positional Accuracy Explanation: No formal assessment conducted

Vertical Positional Accuracy Report: 1:24000 scale and 1:25000 scale USGS topographic standards.

Source Information

Source Citation:

Originator: USGS

Publication Date: various

Title: USGS 7.5' and 7.5' X 15' Topographic Quadrangles

Geospatial Data Presentation Form: map

Source Scale Denominator: 24000 or 25000

Type of Source Media: paper

Source Time Period of Content:

Time Period Information

Range of Dates/Times

Beginning Date: 1964

Ending Date: 1979

Source Currentness Reference: publication date

Source Citation Abbreviation: TOPO

Source Contribution: Watersheds were transferred to these maps from mylar aerial photo overlays, and then digitized from these maps.

Process Step

Process Description: The two sets of watershed delineations were reconciled by a third individual overlaying the two mylars and choosing the watershed boundary line that seemed most appropriate between the two. Most differences occurred in areas of flat areas with low topographic relief.

Source Used Citation Abbreviation: WS-photodelin

Source Produced Citation Abbreviation: WS-photodelin-ck

Process Step

Process Description: Once reconciled, the watershed boundaries were transferred on unfolded topographic maps using a Bausch & Lomb Zoom Transfer Scope. The watershed boundaries were digitized from these final maps using heads-up digitizing in ArcView 3.2.

Source Used Citation Abbreviation: WS-photodelin-ck

Source Produced Citation Abbreviation: WSquads

Process Step

Process Description: The following steps were repeated for each of the 4 watersheds in the watershed:

1. Create an ascii file with 4 tics (of any coordinate system, later they were all rectified to UTM, NAD27 using Corpscon software) within the vicinity of each of the 4 wetlands in the study area.
   Source Used Citation Abbreviation: WSquads
   Source Produced Citation Abbreviation: wtlnd-tic
   Process Step
   Process Description:

   Scan maps as bitmap images and georeference in ArcView using IMAGEGEOREF.AVX (created by George Raber, 1999). Align tics on scanned image with those from the ascii text file (ArcView event theme).

   Source Used Citation Abbreviation: WSquads, wtlnd-tic

   Source Produced Citation Abbreviation: ws-img-georef

   Process Step

   Process Description:

   Digitize watershed boundaries from topographic quadrangles using heads-up digitizing in ArcView. 4 shapefile themes are created, one for each wetland watershed.

   Source Used Citation Abbreviation: WSquads, ws-img-georef

   Source Produced Citation Abbreviation: WS-shp

Process Step

Process Description: Bring 4 shapefiles into ArcInfo. BUILD coverages. Union coverages. Build unioned coverage to create one coverage with all four wetland watersheds called LGWTLND_SHEDS.

Source Used Citation Abbreviation: WS-shp

Source Produced Citation Abbreviation: WS-co

Process Step

Process Description: Add field WETLAND to the LGWTLND_SHEDS.PAT to distinguish which wetland each watershed is associated with.

Source Used Citation Abbreviation: WS-cov

Source Produced Citation Abbreviation: WS-cov-final

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Spatial Data Organization Information