Class i definitions

Class i

1) High category
Found on https://www.crosswordclues.com/clue/class-i

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class i

Perennial or intermittent streams that provide a source of water for domestic use. Class I streams are used by large numbers of anadromous fish or significant sports fish for spawning, rearing, or migration, or are major tributaries to other Class I streams. ... (05 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

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