Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 2 · column 5 of 6 · from the scan, no model involved
ing surfaces are treated as impervious as they are designed to allow water to run off.
If a watershed has an impervious cover of zero to 10 percent over its total area, then a stream within that area is a “sensitive stream” (good). Such streams run through stable channels, have excellent habitat structure, good to excellent water quality, and diverse communities of both fish and
92.6%