Udvidet returret til d. 31. januar 2024

Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD) - U S Department of Agriculture - Bog

Bag om Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)

The Watershed Boundary Dataset (WBD) is a compre- hensive aggregated collection of hydrologic unit data consis- tent with the national criteria for delineation and resolution. This document establishes Federal standards and procedures for creating the WBD as seamless and hierarchical hydrologic unit data, based on topographic and hydrologic features at a 1:24,000 scale in the United States, except for Alaska at 1:63,360 scale, and 1:25,000 scale in the Caribbean. The data within the WBD have been reviewed for certification through the 12-digit hydrologic unit for compliance with the criteria outlined in this document. Any edits to certified data will be reviewed against this standard prior to inclusion. Although not required as part of the framework WBD, the guidelines contain details for compiling and delineating the boundar- ies of two additional levels, the 14- and 16-digit hydrologic units, as well as the use of higher resolution base information to improve delineations. The guidelines presented herein are designed to enable local, regional, and national partners to delineate hydrologic units consistently and accurately. Such consistency improves watershed management through efficient sharing of information and resources and by ensuring that digital geographic data are usable with other related Geo- graphic Information System (GIS) data.

Vis mere
  • Sprog:
  • Engelsk
  • ISBN:
  • 9781500308872
  • Indbinding:
  • Paperback
  • Sideantal:
  • 74
  • Udgivet:
  • 24. juni 2014
  • Størrelse:
  • 216x280x4 mm.
  • Vægt:
  • 195 g.
  • 2-3 uger.
  • 20. november 2024
På lager

Normalpris

  • BLACK NOVEMBER

Medlemspris

Prøv i 30 dage for 45 kr.
Herefter fra 79 kr./md. Ingen binding.

Beskrivelse af Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)

The Watershed Boundary Dataset (WBD) is a compre- hensive aggregated collection of hydrologic unit data consis- tent with the national criteria for delineation and resolution. This document establishes Federal standards and procedures for creating the WBD as seamless and hierarchical hydrologic unit data, based on topographic and hydrologic features at a 1:24,000 scale in the United States, except for Alaska at 1:63,360 scale, and 1:25,000 scale in the Caribbean. The data within the WBD have been reviewed for certification through the 12-digit hydrologic unit for compliance with the criteria outlined in this document. Any edits to certified data will be reviewed against this standard prior to inclusion. Although not required as part of the framework WBD, the guidelines contain details for compiling and delineating the boundar- ies of two additional levels, the 14- and 16-digit hydrologic units, as well as the use of higher resolution base information to improve delineations. The guidelines presented herein are designed to enable local, regional, and national partners to delineate hydrologic units consistently and accurately. Such consistency improves watershed management through efficient sharing of information and resources and by ensuring that digital geographic data are usable with other related Geo- graphic Information System (GIS) data.

Brugerbedømmelser af Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)



Gør som tusindvis af andre bogelskere

Tilmeld dig nyhedsbrevet og få gode tilbud og inspiration til din næste læsning.