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Missouri River Scaphirhynchus albus (pallid sturgeon) effects analysis—Integrative report 2016

“…As a result, the area affected most by flow management will be upstream from the Platte River, with effects decreasing downstream, especially for high-flow pulses. The effects of increased summer and fall navigation flows are presently (2014) notable throughout the Lower Missouri River (Galat and Lipkin, 2000;Pegg and others, 2003;Jacobson and Galat, 2008). The potential effect of summer-fall navigation flows on energetic demands is expected to be highest in upstream segments (Sioux and Platte Rivers) where channel complexity is less compared to downstream segments (Grand and Osage Rivers).…”

“…The Missouri River flood of 1993 did not directly benefit many of the rare, big river fishes in the Lower Missouri River, such as the pallid sturgeon, Macrhybopsis meeki (sicklefin chub), and Macrhybopsis gelida (sturgeon chub) (Galat and others, 1998). It has been hypothesized that restoring many components of native biota of the Lower Missouri River necessitates a natural flow regime and segments of unconstrained channels and flood plains to enable high and low flows to create, modify, and connect inand off-channel habitats (Galat and Lipkin, 2000). Many fish species of the Mississippi River responded positively to the flood plain connectivity provided by a 500-year flood event (Barko and others, 2006); however, there was no indication that obligate river fish species responded positively.…”

“…As a result, the area affected most by flow management will be upstream from the Platte River, with effects decreasing downstream, especially for high flow pulses. The effects of increased summer and fall navigation flows (relative to natural flows) are presently (2016) notable throughout the Lower Missouri River (Galat and Lipkin, 2000;Pegg and others, 2003;Jacobson and Galat, 2008). Flow management is strongly interactive with channel configuration because the two together determine habitat dynamics.…”

“…The six main stem reservoirs were constructed between 1937 and 1963, and operation as a system began in 1967 (U.S. Army Corps of Engineers, 2004). Galat and Lipkin (2000) documented substantial alteration to the annual hydrograph downstream from the reservoirs, including reduced intra-annual flow variability with generally decreased spring pulses and increased summer low flows. Hydrologic changes are especially severe just downstream from the dams and in inter-reservoir reaches where clear, cold water is released.…”

Portfolio optimisation for hydropower producers that balances riverine ecosystem protection and producer needs

“…The range of variability approach (RVA) (Richter et al, 1996(Richter et al, , 1998 has been widely used for assessing flow regime alteration and directing hydraulic facility operations (Galat and Lipkin, 2000;Shiau and Wu, 2004Zhang et al, 2009). According to the RVA, a range of variation for each hydrological indicator was derived from the natural hydrological time series and was set as the flow management target.…”