A GIS Framework for Fish Habitat Prediction at the River Basin Scale

Table 1

Landscape attribute classification criteria.

Landscape attribute	Classification metrics		Criteria
Stream size	Drainage area (km^2)	<100	100–3000	>3000
		Small streams	Large streams/small rivers	Large rivers
Stream quality	Anthropogenic pressure from land use, roads, and railroads (%)	No urban areas, no agricultural areas, no roads, and no railroads within 30 m buffer	0–5% urban areas or 0–40% agricultural areas or summed roads or railroads less than half the length of stream within 30 m buffer	>5% urban areas or >40% agricuIturaI areas or summed roads or railroads ≥ half the length of stream within 30 m buffer
		Intact	Modified	Highly altered
Water quality	Total 𝑁, total 𝑃, suspended sediment	Stream segment is above EPA criteria thresholds for all three pollutants	Stream segment is below EPA criteria threshold for any of the three pollutants
		Suitable water quality	Degraded water quality