Columbia Basin Performance Measures

Sample Exposure Summary Table and Graph for Critical Value Range: PIT Tag Adult

Snake River and Tributaries LGR and above Adult PIT-Tagged Summer Steelhead Query Parameters
Year2024
ProjectLower Granite
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value20-22 °C
Calculate ExposureRange Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period ( - )
Total Number of Fish Observed5239
Percent of Total Run Analyzed [Number Observed]100 % [5239]
Temperature Tailrace Exposure Index17.19 °C
Percent of Fish Exposed [Number Exposed]1.5 % [82]
Number of Days Fish Exposed10
Middle 80% of Run Period ( - )
Number of Fish Observed4211
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [4211]
Temperature Tailrace Exposure Index18.31 °C
Percent of Fish Exposed [Number Exposed]1.1 % [49]
Number of Days Fish Exposed7
Middle 50% of Run Period ( - )
Number of Fish Observed2696
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [2696]
Temperature Tailrace Exposure Index18.48 °C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of Run
5% of Run passed
10% of Run passed
50% of Run passed
90% of Run passed
95% of Run passed
Last Day of Run
Date(s) When Temperature Tailrace Crosses Range 20-22 °C
sample graph
Snake River and Tributaries LGR and above Adult PIT-Tagged Summer Steelhead at Lower Granite daily exposure to Tailrace Water Temperature