Federal Register - July 13, 2021
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Source: Federal Register
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Federal Register / Vol. 86, No. 131 / Tuesday, July 13, 2021 / Proposed Rules
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iii Water quality conditions, including cool to warm water temperatures 8 to 30 C 46.4 to 86.0 F, high dissolved oxygen 5.8 to 9.3 mg/l, slightly acidic to basic pH 6.3
to 7.6, and low levels of pollutants and nutrients meeting the current State of Mississippi criteria, as necessary to maintain natural physiological processes for normal behavior, growth, and viability of all life stages of the species.
iv Presence of a prey base of small aquatic macroinvertebrates, including midges, crustaceans, mayflies, caddisflies, and zooplankton.
3 Critical habitat includes only the stream channels within the ordinary
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high water line, and does not include manmade structures such as buildings, aqueducts, runways, roads, and other paved areas and the land on which they are located existing within the legal boundaries on the effective date of the final rule.
4 Data layers defining map units were created using U.S. Geological Surveys National Hydrography Dataset flowline data, on a base map of State and County boundaries from the U.S.
Department of Agricultures Natural Resources Conservation Service. Critical habitat units were mapped using the Geographic Coordinate System North American 1983 coordinates. The maps in this entry, as modified by any
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accompanying regulatory text, establish the boundaries of the critical habitat designation. The coordinates or plot points or both on which each map is based are available to the public at the Services internet site at http
www.fws.gov/mississippiES/, at http
www.regulations.gov under Docket No.
FWSR4ES20200062, and at the field office responsible for this designation. You may obtain field office location information by contacting one of the Service regional offices, the addresses of which are listed at 50 CFR
2.2.
5 Note: Index map follows:
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