Canyon Reservoir Tailrace BVET Habitat Survey 2006 Large Woody Debris Summary
No. per
Survey Distance (km) 17.1 Category Length (m) Diameter (cm) Description Total(s) Kilometer
Survey Acreage 126 1 1-5 10-55 short, skinny 337 20
2 1-5 >55 short, fat 60 4
Unit Number  Total Percent Linear  Percent Riffle/Run Pool/Glide 3 >5 10-55 long, skinny 60 4
Type of Units Acres Coverage Distance (m) Composition Ratio Ratio 4 >5 >55 long, fat 61 4
Riffle 31 16 13 2355 36 69 Total 518 30
Run 14 9 7 1488 16 31
Pool 35 95 75 12410 41 88
Glide 5 5 4 651 6   13
Total(s) 85 126 100 16904 100 100 100
Substrate Depth Summary
0.0 - 17.1 km Unit Average Depth Median
Substrate Substrate Units Present Percent Composition Cumulative Percent Type Maximum Average Maximum Average
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant Riffle - Max 58 35 50 35
Organic  1 0 0 0 0 0 0 Run - Max 59 35 50 33
Clay 2 0 0 0 0 0 0 Pool - Max 167 165 113 110
Silt 3 2 3 2 4 2 4 Glide - Max 63 50 37 30
Sand 4 2 1 2 1 5 5
Sm. Gravel 5 2 8 2 10 7 14
Lg. Gravel 6 9 13 11 15 18 30
Cobble 7 6 26 7 31 25 61
Boulder 8 12 31 14 37 39 98 Riffle - Max 58 50
Bedrock 9 51 2 61 2 100 100 Riffle - Avg 35 35
Total(s) 84* 84* 100 100 Run - Max 59 50
*Only GPS data recorded for Pool 35 Run - Avg 35 33
Pool - Max 167 113
Pool - Avg 165 110
Glide - Max 63 37
Glide - Avg 50 30
Riffle Substrate Habitat Suitability Model - V4 (Thalweg Depth)
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant 0.0-17.1 km
Organic  1 0 0 0 0 0 0 Average Maximum Depth (cm) 102
Clay 2 0 0 0 0 0 0 Suitability Index >=1.0
Silt 3 0 1 0 3 0 3
Sand 4 0 0 0 0 0 3 0.0-6.3 km
Sm. Gravel 5 0 1 0 3 0 6 Average Maximum Depth (cm) 118
Lg. Gravel 6 1 4 3 13 3 19 Suitability Index >=1.0
Cobble 7 5 8 16 26 19 45
Boulder 8 5 15 16 48 35 94 6.3-11.7 km
Bedrock 9 20 2 65 6 100 100 Average Maximum Depth (cm) 88
Total(s) 31 31 100 100 Suitability Index >=1.0
11.7-17.1 km
Average Maximum Depth (cm) 103
Suitability Index >=1.0
Run Substrate Habitat Suitability Model - V10 (Percent Pools)
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant 0.0-17.1 km Percent Pools: 47
Organic  1 0 0 0 0 0 0 Unit Number  Percent Suitability Index: >= 1.0
Clay 2 0 0 0 0 0 0 Type of Units Composition
Silt 3 0 0 0 0 0 0 Riffle 31 36
Sand 4 0 0 0 0 0 0 Run 14 16
Sm. Gravel 5 1 2 7 14 7 14 Pool 35 41
Lg. Gravel 6 2 3 14 21 21 36 Glide 5 6
Cobble 7 1 3 7 21 29 57 Total(s) 85 100
Boulder 8 0 6 0 43 29 100
Bedrock 9 10 0 71 0 100 100 0.0-6.3 km Percent Pools: 41
Total(s) 14 14 100 100 Unit Number  Percent Suitability Index: >= 1.0
Type of Units Composition
Riffle 12 41
Run 5 17
Pool 10 34
Glide 2 7
Total(s) 29 100
6.3-11.7 km
Unit Number  Percent Percent Pools: 55
Type of Units Composition Suitability Index: >= 1.0
Riffle 10 30
Run 5 15
Pool 15 45
Glide 3 9
Total(s) 33 100
11.7-17.1km
Unit Number  Percent Percent Pools: 43
Type of Units Composition Suitability Index: >= 1.0
Riffle 9 39
Run 4 17
Pool 10 43
Glide 0 0
Total(s) 23 100
Habitat Suitability Model - V15 (Pool Class Rating)
Pool Substrate
Substrate Substrate Units Present Percent Composition Cumulative Percent Unit Number
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant Type of Units
Organic  1 0 0 0 0 0 0 Glides 5
Clay 2 0 0 0 0 0 0 Pools 35
Silt 3 2 2 6 6 6 6 Total 40
Sand 4 1 1 3 3 9 9
Sm. Gravel 5 0 4 0 12 9 21 Depth >=200cm 15
Lg. Gravel 6 6 4 18 12 27 32
Cobble 7 0 14 0 41 27 74 Pool Class Rating (1st Class >=30%) 38
Boulder 8 6 9 18 26 44 100
Bedrock 9 19 0 56 0 100 100 Suitability Index A
Total(s) 34* 34* 100 100
*Only GPS data recorded for Pool 35
Glide Substrate
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant
Organic  1 0 0 0 0 0 0
Clay 2 0 0 0 0 0 0
Silt 3 0 0 0 0 0 0
Sand 4 1 0 20 0 20 0
Sm. Gravel 5 1 1 20 20 40 20
Lg. Gravel 6 0 2 0 40 40 60
Cobble 7 0 1 0 20 40 80
Boulder 8 1 1 20 20 60 100
Bedrock 9 2 0 40 0 100 100
Total(s) 5 5 100 100
Habitat Suitability Model - V9 (Food Production)
0.0 km - 6.3 km
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant
Organic  1 0 0 0 0 0 0
Clay 2 0 0 0 0 0 0
Silt 3 0 1 0 6 0 6
Sand 4 0 0 0 0 0 6
Sm. Gravel 5 0 1 0 6 0 12
Lg. Gravel 6 1 4 6 24 6 35
Cobble 7 2 2 12 12 18 47
Boulder 8 0 9 0 53 18 100
Bedrock 9 14 0 82 0 100 100
Total(s) 17 17 100 100
Predominant substrate type (>= 50%)
0.0- 6.3 km Bedrock
Suitability Index C
Habitat Suitability Model - V9 (Food Production)
6.3 - 11.7 km
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant
Organic  1 0 0 0 0 0 0
Clay 2 0 0 0 0 0 0
Silt 3 0 0 0 0 0 0
Sand 4 0 0 0 0 0 0
Sm. Gravel 5 1 1 7 7 7 7
Lg. Gravel 6 1 1 7 7 13 13
Cobble 7 1 5 7 33 20 47
Boulder 8 2 6 13 40 33 87
Bedrock 9 10 2 67 13 100 100
Total(s) 15 15 100 100
Predominant substrate type (>= 50%)
6.3-11.7km Bedrock
Suitability Index C
Habitat Suitability Model - V9 (Food Production)
11.7 - 17.1 km
Substrate Substrate Units Present Percent Composition Cumulative Percent
Type Number Dominant Subdominant Dominant  Subdominant Dominant Subdominant
Organic  1 0 0 0 0 0 0
Clay 2 0 0 0 0 0 0
Silt 3 0 0 0 0 0 0
Sand 4 0 0 0 0 0 0
Sm. Gravel 5 0 1 0 8 0 8
Lg. Gravel 6 1 2 8 15 8 23
Cobble 7 3 4 23 31 31 54
Boulder 8 3 6 23 46 54 100
Bedrock 9 6 0 46 0 100 100
Total(s) 13 13 100 100
Predominant substrate types occur in approximately equal amounts
11.7-17.1 km Lg. Gravel, Cobble, Boulder (54% of substrate)
Bedrock (46% of substrate)
Suitability Index B / C