Residential wastewater systems in the Cayuga Lake Watershed

Originator: Cayuga Lake Watershed Network
Originator: Nicholas Hollingshead, GIS Analyst
Publication_Date: 20070901
Title: Residential wastewater systems in the Cayuga Lake Watershed
Geospatial_Data_Presentation_Form: vector digital data
Abstract: This point dataset identifies all residential structures in the Cayuga Lake Watershed, and indiciates whether it is served by a municipal sewer system or is expected to have an on-site waste management system. TIGER Census 2000 data was used to estimate the number of individuals per residential structure.
Purpose: This geographic dataset was developed by the Cayuga Lake Watershed Network as part of a larger project, in conjunction with Dr. Douglas Haith and Cornell University, to model nutrient loading in the Cayuga Lake watershed. The model used is the Generalized Watershed Loading Function (Haith and Shoemaker, 1987). Haith, D.A. and L.L. Shoemaker, 1987. Generalized Watershed Loading Functions for Stream Flow Nutrients. Water Resources Bulletin, 23(3), pp. 471-478.
Supplemental_Information: Additional documentation is available at <>
Beginning_Date: 2000
Ending_Date: 2003
Currentness_Reference: ground condition
Progress: Complete
Maintenance_and_Update_Frequency: As needed
West_Bounding_Coordinate: -76.995366
East_Bounding_Coordinate: -76.141465
North_Bounding_Coordinate: 42.979961
South_Bounding_Coordinate: 42.246406
Theme_Keyword_Thesaurus: None
Theme_Keyword: Sewer Sysetms
Theme_Keyword: Sewage
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: utilitiesCommunication
Place_Keyword_Thesaurus: None
Place_Keyword: New York State
Place_Keyword: Cayuga County
Place_Keyword: Cortland County
Place_Keyword: Schuyler County
Place_Keyword: Seneca County
Place_Keyword: Tompkins County
Place_Keyword: Tioga County
Place_Keyword: Cayuga Lake Watershed
Access_Constraints: None
Use_Constraints: Data users are responsible for the use and interpretation of the provided data. The geographic dataset is provided "as is" to end users. When using this dataset, please cite the Cayuga Lake Watershed Network
Contact_Organization: Cayuga Lake Watershed Network
Contact_Person: Hilary Lambert
Contact_Position: Watershed Steward
Address_Type: mailing and physical
Address: 170 Main Street
Address: PO Box 348
City: Aurora
State_or_Province: New York
Postal_Code: 13026
Contact_Voice_Telephone: 315-364-2992

Attribute_Accuracy_Report: The method for estimating the number of onsite wastewater management systems in the watershed involved first determining both the location of all residential structures and the extent of existing sewer districts, then identifying all the residential structures not located within the boundary of the sewer districts, assuming these residential structures would require onsite wastewater management systems. Though this method may not be precise, it is expected to provide reasonable and sufficient accuracy for estimating non-point source pollution at the scale of the watershed or subwatershed using the GWLF model. U.S. Census block-level data was used to estimate the number of residents per residential structure. The product of this effort was a single geospatial data layer indicating the location of all residential structures with onsite wastewater management systems and the estimated number of individuals using those systems. It is important to note that these numbers and locations are estimates and not precise measurements.
Logical_Consistency_Report: unknown
Completeness_Report: Includes all residential structures within the Cayuga Lake Watershed measuring over 700 square feet, as identified from aerial imagery captured in 2002 and 2003 in