DO Improvement Feasibility Study
East Branch DuPage River 3.0 Existing Conditions
DRSCW 3-11 August 2008
Table 3-6 - Qualitative Habitat Evaluation Index (Rankin, 1989)
QHEI Component Point Value
Substrate type and quality 20
In-stream cover type and amount 20
Channel morphology – sinuosity, development, channelization stability 20
Riparian zone – width, quality, bank erosion 10
Pool quality – maximum depth, morphology, current 12
Riffle quality – depth, substrate stability, substrate embeddedness 8
Map gradient 10
Table 3-7 - QHEI Scores by River Mile
River Mile Location QHEI Score
22.00 6385 ft downstream of Army Trail Road 43.0
20.50 1936 ft downstream of North Avenue 35.0
17.30 471 ft downstream of IL-53 48.0
11.85 119 ft upstream of Lacey Avenue 35.0
11.10 88 ft downstream of Short Street 39.0
8.46 1484 ft downstream of Hobson Road 46.0
5.15 3138 ft downstream of Royce Road (Will
County)
43.0
2.60 4908 ft upstream of Naperville Road (Will
County)
56.5
