which includes 758 non-clipped steelhead, have been counted. The ten year average is 6,342 total and 2,103 non-clipped steelhead. We compiled the date from the DART website. (http://www.cbr.washington.edu/dart) This data includes both ladders. The fish counts used for Table 2 below were the 10 average from May 15 to June 15 divided by the total run ten year average. The table records the percentage of total run of each species effected by the Oregon ladder fish pump 2 stop log removal and testing during this time frame. Again, we compiled the data from the DART website. () However, from May 16 to 22, no wet testing of the fish pump will occur and testing should be completed by June 7. Therefore, the percentage of fish effect will be less than stated in the table. Nevertheless, this time frame allows for variances in the testing schedule and any issues that may arise. Table 2. Percent of Total Run Impacted by Fish Pump 2 Testing. Spring Summer Summer Combined Spring Chinook Chinook Chinook Sockeye Chinook Steelhead Jacks Jacks 30.0 58.9 8.9 11.9 0.2 1.7 During intake log removal, fish passage could be affected as the intake is near the south powerhouse entrance and along the Oregon shoreline. Notice and vibrations from log removal could potentially affect passage 5 or less hours. During discharge log the removal, there will be reduced attraction flow, which could delay fish passage that day for five hours or less. Both sets of logs will be removed in the afternoon to try to reduce any disturbance of fish passage. During fish pump 2 wet testing, fish 1 and 3 will be in use and available to supplement flow. However, during blade angle changes, attraction flow could briefly decrease or increase, which could result in the ladder being out of criteria momentarily. The result could cause brief delays in passage, particularly when the blade angles are reduced. All adjustments will be made as quickly and as smoothly as possible to reduce the attraction flow disruptions. With current fish passage lower than average, delays are a recognized concern. Summary statement - expected impacts on: Downstream migrants: None. Minimal. Upstream migrants: Lamprey: None. Comments from agencies
which includes 758 non-clipped steelhead, have been counted. The ten year average is 6,342 total and 2,103 non-clipped steelhead. We compiled the date from the DART website. (http://www.cbr.washington.edu/dart) This data includes both ladders. The fish counts used for Table 2 below were the 10 average from May 15 to June 15 divided by the total run ten year average. The table records the percentage of total run of each species effected by the Oregon ladder fish pump 2 stop log removal and testing during this time frame. Again, we compiled the data from the DART website. () However, from May 16 to 22, no wet testing of the fish pump will occur and testing should be completed by June 7. Therefore, the percentage of fish effect will be less than stated in the table. Nevertheless, this time frame allows for variances in the testing schedule and any issues that may arise. Table 2. Percent of Total Run Impacted by Fish Pump 2 Testing. Spring Chinook Spring Chinook Jacks Summer Chinook Summer Chinook Jacks Combined Steelhead Sockeye 30.0 58.9 8.9 11.9 0.2 1.7 During intake log removal, fish passage could be affected as the intake is near the south powerhouse entrance and along the Oregon shoreline. Notice and vibrations from log removal could potentially affect passage 5 or less hours. During discharge log the removal, there will be reduced attraction flow, which could delay fish passage that day for five hours or less. Both sets of logs will be removed in the afternoon to try to reduce any disturbance of fish passage. During fish pump 2 wet testing, fish 1 and 3 will be in use and available to supplement flow. However, during blade angle changes, attraction flow could briefly decrease or increase, which could result in the ladder being out of criteria momentarily. The result could cause brief delays in passage, particularly when the blade angles are reduced. All adjustments will be made as quickly and as smoothly as possible to reduce the attraction flow disruptions. With current fish passage lower than average, delays are a recognized concern. Summary statement - expected impacts on: Downstream migrants: None. Upstream migrants: Minimal. Lamprey: None. Comments from agencies
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