"... our findings suggest that increasing the release of hypolimnetic water from reservoirs during summer months can be a viable solution to mitigate the river temperature increase" www.sciencedirect.com/science/arti... - ThreadSky

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iainamalcolm.bsky.social • 94 days ago

"... our findings suggest that increasing the release of hypolimnetic water from reservoirs during summer months can be a viable solution to mitigate the river temperature increase" https://www.sciencedirect.com/science/article/pii/S0022169424016895?via%3Dihub

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profcolinbean.bsky.social•94 days ago

Ok for temperature maybe but what about other parameters - like DO for example?

iainamalcolm.bsky.social•94 days ago

You're correct. In many cases there could be issues.

jonnyarcher.bsky.social•93 days ago

My prelim findings on the Tweed showed that the Fruid reservoir by mid July does not have not a hypolimnetic layer to draw on. Meaning when freshets are released they were putting in water that is on average warmer than riverine temperature. Potentially increasing riverine temperatures.

iainamalcolm.bsky.social•93 days ago

All context specific depending on the characteristics of the water body, the impoundment infrastructure & operating regime. Nevertheless, it would be useful to explore if there are any generalisable findings & how different impounded and natural standing waters are from each other.

jonnyarcher.bsky.social•93 days ago

This certainly would be useful to know.

jonnyarcher.bsky.social•93 days ago

Additionally dam operators in the Tweed district don’t have water temperature monitoring system of their water bodies, let alone other parameters such as O2. So how can they operate their compensation flow and freshets with informed knowledge is beyond me. Maybe a change in legislation is required?

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