OAR 635-410-0030
Calculation of Numbers and Monetary Value of Fish and Wildlife, and Cost of Restoring Productivity Pursuant to ORS 468B.060
(1)
Fish Kills: Number of Fish.(a)
If non-adult fish were injured or killed, the survival rate to the adult life stage, or catchable size in the case of game or food fish, for any given non-adult life stage shall be multiplied by the number of that life stage killed or injured to estimate adult equivalents.(A)
Survival rates specific to the population affected shall be used if information is available.(B)
Standard survival rates shall be assumed if no survival rates specific to the affected population are available.(C)
Standard survival rates (to catchable size) by life stage to be used for Pacific salmon, steelhead and resident trout species are provided as follows:(i)
Chinook — Redd Size Eggs 4,500; Eggs 0.01; 0 Fry <60 mm 0.02; 0+ Fry >60 mm 0.05; 1+ 0.20; 2+ 1.00;(ii)
Steelhead — Redd Size Eggs 3,300; Eggs 0.01; 0 Fry <60 mm 0.02; 0+ Fry >60 mm 0.06; 1+ 0.25; 2+ 1.00;(iii)
Coho — Redd Size Eggs 2,800; Eggs 0.01; 0 Fry <60 mm 0.02; 0+ Fry >60 mm 0.06; 1+ 0.25; 2+ 1.00;(iv)
Searun Cutthroat — Redd Size Eggs 1,750; Eggs 0.01; 0 Fry <60 mm 0.02; 0+ Fry >60 mm 0.08; 1+ 0.30; 2+ 1.00;(v)
Resident Trout 10-15 inches — Redd Size Eggs 1,400; Eggs 0.02; 0 Fry <60 mm 0.03; 0+ Fry >60 mm 0.09; 1+ 0.35; 2+ 1.00;(vi)
Resident Trout 5-10 inches — Redd Size Eggs 250; Eggs 0.03; 0 Fry <60 mm 0.06; 0+ Fry >60 mm 0.20; 1+ 0.70; 2+ 1.00.(D)
Standard survival rates (to catchable size) by life stage to be used for common warmwater game fish species are provided as follows:(i)
Bass — Eggs (nest size assumed to be 5,000 eggs) 0.005; 0 Fry (Hatched) 0.020; 0+ Fry (Autumn) 0.15; 1+ 0.50; 2+ 1.00; 3+ 1.00;(ii)
Other — Eggs (nest size assumed to be 5,000 eggs) 0.002; 0 Fry (Hatched) 0.008; 0+ Fry (Autumn) 0.08; 1+ 0.25; 2+ 0.50; 3+ 1.00.(E)
If the number of fish injured or killed in a juvenile life stage cannot be estimated effectively because of difficulty in observing or collecting dead and injured fish, the adult equivalent of that life stage shall be estimated as the greater of the number of harvestable (legal-sized) fish killed or injured, or the adult equivalent population of that life stage estimated for a comparable freshwater area.(b)
If the fish loss or associated habitat damage may reduce production of future generations, the loss of adults in subsequent generations prior to full restoration or recovery of adult production through artificial or natural means shall be estimated.(c)
The adult loss for each species shall be determined as the sum of actual adult losses, plus adult equivalents of non-adult life stages, plus loss of adults in subsequent generations.(2)
Fish Kills: Value of Fish. After calculating numbers lost as provided in 635-410-0030 (Calculation of Numbers and Monetary Value of Fish and Wildlife, and Cost of Restoring Productivity Pursuant to ORS 468B.060)(1), the Department shall determine for each species the greatest value, after comparing values calculated by using each of the following methods (if applicable):(a)
Multiply the monetary value provided for any species identified in ORS 496.705 (Damage suits for unlawful killing of wildlife)(2)(a) through (k), by the adult loss.(b)
Multiply the monetary value provided for any food fish species identified in ORS 506.720 (Suit for damages) by the adult loss.(c)
Multiply the adult loss for any species otherwise protected by the wildlife laws (and not specifically provided for in ORS 496.705 (Damage suits for unlawful killing of wildlife) or 506.720 (Suit for damages) or the laws of the United States) by $25.(d)
Determine the replacement cost for fish or wildlife species not specifically identified in ORS 496.705 (Damage suits for unlawful killing of wildlife) or 506.720 (Suit for damages) by using appropriate scientific, governmental or commercial information on costs of fish and wildlife propagation (e.g., the values from American Fisheries Society Monetary Values of Fish or vendor price lists). This cost shall be adjusted for inflation from the date of publication or documentation of the information used. The replacement cost shall include all administrative costs of the Department in direct support of the replacement or restocking effort.(e)
If hatchery replacement of an affected species is inappropriate pursuant to any applicable statute or rule, estimate all expected costs to the Department of obtaining, transporting and successfully introducing replacement wild stock. This estimate shall include administrative costs in direct support of the replacement effort.(f)
Estimate the reduction in net economic value associated with the affected fish and wildlife species from appropriate published or documented sources (e.g., agency reports or scientific publications), taking into account commercial, recreational, nonuse and other values associated with the resource. This estimate shall be adjusted for inflation from the date of publication or documentation of the information used.
Source:
Rule 635-410-0030 — Calculation of Numbers and Monetary Value of Fish and Wildlife, and Cost of Restoring Productivity Pursuant to ORS 468B.060, https://secure.sos.state.or.us/oard/view.action?ruleNumber=635-410-0030.