HUC 6 definition

HUC 6 means a watershed delineated by the U.S. geological survey using a nationwide system based on surface hydrologic features at the 6-digit basin scale (the hydrologic unit code 6).
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HUC 6 means a watershed delineated by the U.S. geo- logical survey using a nationwide system based on surface hydro- logic features at the 6−digit basin scale (the hydrologic unit code 6).
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Examples of HUC 6 in a sentence

  • The WRP uses the Hydrologic Unit Code (HUC) watersheds at two scales: HUC 4 and HUC 6, where HUC 4 watersheds are mostly larger than 500 square kilometers and HUC 6 watersheds are entirely nested within HUC 4 watersheds and mostly larger than 200 square kilometers.

  • Adjacent HUC 8 watersheds within the same EPA Level IV Ecoregion as the Site but within a different HUC 6 will not typically be included within a GSA boundary.

  • However, Sites located near river confluences with differing adjacent HUC 6 watersheds but within the same EPA Level IV Ecoregion as the Site may be reviewed by USACE for GSA consideration.

  • If mitigation will be performed in a different EDU but same HUC 6, a multiplier of 2 will apply (meaning proposed mitigation acreage times 2).

  • Include the following project location information in the Proposal: • a map with location of the Wetland Replacement Project; • legal land location(s) of the Wetland Replacement Project; • municipality that the Wetland Replacement Project is located within; • Relative Wetland Value Assessment Unit of the Wetland Replacement Project; • HUC 6 watershed1 number and name; and • HUC 4 watershed1 number and name.

  • For stream mitigation, mitigation will be performed within the same or adjacent HUC 8, within the same EDU and HUC 6.

  • To cross both EDU and HUC 6 boundaries, a multiplier of 4 will apply.

  • Where feasible and practicable, mitigation will be performed within the same Hydrologic Unit Code (HUC) 8 or adjacent HUC 8 as the project impacts and within the same Ecological Drainage Unit (EDU) and HUC 6.

  • Project Location Information Include the following project location information in the Proposal: • a map with location of the Wetland Replacement Project; • legal land location(s) of the Wetland Replacement Project; • municipality that the Wetland Replacement Project is located within; • Relative Wetland Value Assessment Unit of the Wetland Replacement Project; • HUC 6 watershed1 number and name; and • HUC 4 watershed1 number and name.

  • For a non-adjacent HUC 8 within the same EDU and HUC 6, a multiplier of 2 will apply.