Improvement Low priority road Incised, riprap, lack of Activities Downstream of West crossing barrier, brook Tischer habitat, eroding stream Arrowhead Road trout present in 2013 banks (upstream reach) West Branch, between West Constricted valley, riprap 2 low priority and 1 Tischer, West St. Marie Street and Norton on poor habitat, medium priority road Branch Street invasive riparian species crossing barriers Warming temperatures, 7% Greatly incised, stressful temperatures significant bank erosion, (upstream reach), brook Keene Creek Park, near trail pooling causing trout are present warming (upstream reach), high priority crossing (upstream reach) Greatly incised, invasive East Branch 1/3rd mile Warming – Merritt species, over-widened upstream of Skyline Parkway temperatures channel, aggradation Medium priority road Lawns mowed to stream crossing barrier, brook Up and downstream of Miller edge, no shade, stream trout present in 1968, Anderson Road bank erosion slightly warming water temperature Figure . Overall reach health scores (SSLSWCD 2017a). Higher scores are better quality. Stream Biological Integrity Stream vulnerability was determined on their index of biotic integrity (IBI) scores (Figure 24 and Figure 25). In the figures below, the blue markers (“> upper confidence limit”) indicate streams that are comfortably meeting threshold targets and are of the highest quality. The red markers (“< lower confidence limit”) indicate streams that do not meet the targets. The green and purple markers (“> or < threshold”) indicate streams with IBI scores that are close to the targets and are considered threatened and vulnerable to becoming impaired. These streams are vulnerable and should be considered for protection because (1) they have a high potential for restoration, and (2) they are potentially vulnerable to impairment in the future. Those streams that are unimpaired for aquatic life but may be threatened based on the IBI data include: Tischer Chester Creek Mission Creek
Improvement Activities Tischer Downstream of West Arrowhead Road Incised, riprap, lack of habitat, eroding stream banks Low priority road crossing barrier, brook trout present in 2013 (upstream reach) Tischer, West Branch West Branch, between West St. Marie Street and Norton Street Constricted valley, riprap on poor habitat, invasive riparian species 2 low priority and 1 medium priority road crossing barriers Keene Creek Park, near trail Greatly incised, significant bank erosion, pooling causing warming Warming temperatures, 7% stressful temperatures (upstream reach), brook trout are present (upstream reach), high priority crossing (upstream reach) Merritt East Branch – 1/3rd mile upstream of Skyline Parkway Greatly incised, invasive species, over-widened channel, aggradation Warming temperatures Miller Up and downstream of Anderson Road Lawns mowed to stream edge, no shade, stream bank erosion Medium priority road crossing barrier, brook trout present in 1968, slightly warming water temperature Figure . Overall reach health scores (SSLSWCD 2017a). Higher scores are better quality. Stream Biological Integrity Stream vulnerability was determined on their index of biotic integrity (IBI) scores (Figure 24 and Figure 25). In the figures below, the blue markers (“> upper confidence limit”) indicate streams that are comfortably meeting threshold targets and are of the highest quality. The red markers (“< lower confidence limit”) indicate streams that do not meet the targets. The green and purple markers (“> or < threshold”) indicate streams with IBI scores that are close to the targets and are considered threatened and vulnerable to becoming impaired. These streams are vulnerable and should be considered for protection because (1) they have a high potential for restoration, and (2) they are potentially vulnerable to impairment in the future. Those streams that are unimpaired for aquatic life but may be threatened based on the IBI data include: Tischer Chester Creek Mission Creek
Duluth_WRAPS_Oct%203%202017.docx