Flow Issues
#   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec   Mean Comments Status
1 Aesthetic Considerations Use as a test for other issues  
2 Aquatic Weeds - - - - - - - - - - - - - Related to sewage, not primarily a flow issue  
3 Canoeing - - - - 60 60 60 60 60 60 60 60 60 60 60 60 - - - Minimize rate of change of water levels Check with canoeists
4 Cattle Wandering - - - - 50 50 50 50 50 50 50 50 50 50 - - - -    
5 Changes in nature of river Natural flow pattern desired  
6 Cheslatta Fan    
7 Damage-Murray/Cheslatta 6.1 5.7 5.2 6.7 28.6 44.9 31.0 18.7 11.5 8.0 7.2 6.5 15.0 Releases from Skins Lake, based on C Mitchell report  
8 Downstream Licensing (Irrigation) - - - - 23 23 0 0 28 28 13 13 - - - - - Water available for licensing in reach 2 (<5% impact on flow)  
9 Economic Development-Industrial - - - - - - - - - - - - -    
10 Economic Development-Southside    
11 Fish - Murray/Cheslatta   Not done
12 Fish - Nechako Reservoir   Not done
13 Float Plane Operations - - - - 41 41 41 41 41 41 41 41 41 41 41 41 - - - Minimize rate of change of water levels G Davidson
14 Flooding 55 55 55 55 55 55 283 283 283 283 283 283 283 283 283 283 283 283 283 283 55 55 55 55 Minimize winter (ice cover) flow fluctuations  
15 Hydroelectric - Kemano    
16 Hydroelectric - Kenney Dam Estimate of financially viable generation at Kenney Dam  
17 Municipal Sewage Treatment - - - - - - - - - - - - - Will not affect minimum flows, system upgrade required  
18 Nechako Reservoir Levels   Not done
19 Recreational User Safety - - - - - - - - - - - - - Not a volume requirement; minimize river fluctuations  
20 Resident Fish - Nechako 104 104   W Eamer
21 Sedimentation - - - - - - - - - - - - Seasonal flow pattern/freshet, minimize peak flow changes  
22 Semi-aquatic Fur Bearers Spring freshet desired, stable flows through fall/winter  
23 Water Quality - Recreation - - - - - - - - - - - - -   J Chess
24 Water Temperature - Sockeye - - - - - - - - - - - - 87 75 - - - - - - - - - Average flow requirements of present facility  
  Additional flow required for 14 o 24.3 17.57    
25 Water Volume - Chinook 85 85 85 85 85 85 85 85 85 85 283 283 283 283 283 283 125 125 125 125 85 85 85 85 - Nov to Mar (winter) flows > 50% Sep/Oct flows  
  NFCP Directed Flows 30 30 30 30 30 30 35 40 49 49 49 49 49 49 49 49 30 30 30 30 30 30 30 30 36.8    
  NFCP Directed Flows plus inflows 30.8 30.7 30.6 30.7 30.7 33.5 41.2 51.3 65.3 62.2 59.1 56.7 54.2 52.5 50.8 50.8 31.8 31.8 31.7 31.7 31.7 31.3 30.9 30.9 40.8 Mean + Cheslatta Inflows  
Proposed Flows Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean
days 15 16 15 15 15 16 15 15 15 16 15 15 15 16 15 16 15 15 15 16 15 15 15 16
Proposed Skins 6.1 5.9 5.7 5.5 5.2 6.0 6.7 17.7 28.6 36.8 44.9 38.0 31.0 24.9 18.7 15.1 11.5 9.8 8.0 7.6 7.2 6.9 6.5 6.3
cms*days 91.5 94.4 85.5 81.8 78.0 95.2 100.5 264.8 429.0 588.0 673.5 569.3 465.0 397.6 280.5 241.6 172.5 146.3 120.0 121.6 108.0 102.8 97.5 100.8 15.1
Proposed Kenney 25.0 25.0 25.0 25.0 25.0 25.0 28.3 26.4 26.4 68.0 26.4 26.4 33.0 59.0 55.0 40.0 37.0 38.0 32.0 29.5 25.0 25.0 25.0 25.0
cms*days 375.0 400.0 375.0 375.0 375.0 400.0 424.5 396.0 396.0 1088.0 396.0 396.0 495.0 944.0 825.0 640.0 555.0 570.0 480.0 472.0 375.0 375.0 375.0 400.0 32.6
Proposed Combined 31.1 30.9 30.7 30.5 30.2 31.0 35.0 44.1 55.0 104.8 71.3 64.4 64.0 83.9 73.7 55.1 48.5 47.8 40.0 37.1 32.2 31.9 31.5 31.3 47.7
Vine Tine % Inflows 0.196   0.152   0.18   1.559   4.08   2.536   1.304   0.457   0.455   0.426   0.428   0.232  
Natural Inflow 0.8 0.7 0.6 0.7 0.7 3.5 6.2 11.3 16.3 13.2 10.1 7.7 5.2 3.5 1.8 1.8 1.8 1.8 1.7 1.7 1.7 1.3 0.9 0.9 4
Total Combined 31.9 31.6 31.3 31.1 30.9 34.4 41.2 55.3 71.3 118.0 81.4 72.0 69.2 87.4 75.5 56.9 50.3 49.5 41.7 38.8 33.9 33.2 32.4 32.2 51.7 cms (Proposed)
Reference Flows
  High Year 1997 56.8   56.6   56.9   71.0   149.0   281.0   345.0   289.0   86.2   88.1   66.4   57.9   135.1    
  Low Year 1998 31.7 31.4 31.1 36.5 60.6 55.8 119.0 146.0 37.3 33.0 33.5 32.7 54.4
  Avg '81-'99 35.4 35.3 35.2 35.8 36.3 45.9 55.5 62.6 69.7 69.8 69.9 115.9 161.9 166.0 170.1 105.9 41.7 42.9 44.1 43.1 42.0 39.0 35.9 35.7 66.9
  Est. NFCP, inflow, cooling, '81-'99 30.8 30.7 30.6 30.7 30.7 33.5 41.2 51.3 65.3 62.2 59.1 56.7 173.7 173.7 125.8 125.8 31.8 31.8 31.7 31.7 31.7 31.3 30.9 30.9 56.7  
  Avg '81-'99 (minus spills,redistributed) 28.4 26.2 24.1 21.5 18.9 25.5 32.1 74.7 117.4 133.5 149.7 124.2 98.7 77.7 56.7 46.8 36.9 41.4 46.0 43.9 41.9 36.6 31.2 29.8 56.7 cms (Present)
Fisheries Flows for Cheslatta 40 40 40 40 40 40 59 59 198 198 198 198 119 119 99 99 79 79 59 59 40 40 40 40 92
Fisheries Flows for Vanderhoof 35 35 38 38 35 35 39 39 137 137 139 139 84 84 78 78 69 69 52 52 24 24 32 32 63.5
Fisheries Flows for Isle Pierre 0 0 4 4 7 7 0 0 104 104 0 0 0 0 0 0 0 0 0 0 0 0 0 0