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Framework # 2.5.11

Framework # 2.5.11. Great Lakes’ Tributary Assessment for Asian Carp Suitability. Elizabeth Murphy and Ryan Jackson-USGS, Illinois Water Science Center Duane Chapman-USGS, Columbia Environmental Research Center. Introduction and Objectives.

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Framework # 2.5.11

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  1. Framework # 2.5.11 Great Lakes’ Tributary Assessment for Asian Carp Suitability Elizabeth Murphy and Ryan Jackson-USGS, Illinois Water Science Center Duane Chapman-USGS, Columbia Environmental Research Center

  2. Introduction and Objectives • Determine the river length, water velocity, and water temperature characteristics required for spawning and growth of bighead and silver carps to assess the risk of their creating a breeding population in Great Lakes tributaries • Combine egg and larvae transport requirements and river data to create a tool to determine if the tributary would be suitable for spawning

  3. Current Knowledge • Measured egg diameters and specific gravity at progressive development stages to characterize for transport modeling • Completed development series at different temperatures to understand growth rates • Asian Carp begin to swim vertically before they can swim horizontally—can keep themselves in suspension at an earlier developmental stage than previously thought

  4. Current Knowledge (continued) • Hydraulic and water-quality data collected and processed for the Milwaukee River, WI • Hydraulic data collected and processed for the St. Joseph River, MI • Initial data allow us to identify • potential settling areas for eggs • where spawning may occur • Velocity distribution and dispersion data required for the tributary assessment tool

  5. Future Plans • Verify development series with another spawn (Spring/Summer 2011) • Collect hydraulic and water-quality data on the Maumee River, OH; possible connection between Lake Erie and Wabash River in the Mississippi Basin (Summer 2011) • Flume experiments with University of Illinois at Urbana-Champaign to understand egg transport and settlement and develop tributary assessment tool

  6. Technological or Other Hurdles • Hydraulic and water-quality data collection is dependent on storms during warm weather • Egg and larvae characterization depends on successful spawning in the lab

  7. Data Gaps • Hard to prove a negative. Understanding what makes a tributary suitable for spawning does not necessarily exclude tributaries that don’t meet the identified criteria.

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