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FONDRIEST PUBLICATIONS

At Sippo Lake, Sediment Questions And Place-Based Learning Push

Sippo Lake in Stark County, Ohio, has long had a sediment problem. Years ago, in the late 1990s, it was so choked full of sediment that its max depth was only about 4 feet. Because of the extensive silt that had practically filled the lake in, officials with the Stark County Park District opted to have it dredged through 1997 and 1998 and nowadays its depths have much improved. But as for the sediments coming in, that’s still an issue that managers are working on. In a recent visit, the Environmental Monitor got a chance to see how park officials are studying Sippo Lake’s sediment issues as well as some of the moves they’ve made to address them.

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Flood Warning Systems

Chapter Overview: Flood Warning A Real-Time Solution Streamflow Measurements Typical Flood Warning System Monitoring Location Data Management Quality Assurance Recommended Equipment Why Monitoring Matters While some areas are more prone to flooding than others, the establishment of flood warning systems near any major waterway or body of water provides critical information that can protect property and save lives. Of course, the most effective flood warning methods extend beyond the installation of gages and telemetry equipment, and employ qualified staff and carefully designed procedures to provide the earliest warning about whether a flood should be expected, when it will occur, and how severe it will be.

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Bacterial Coldwater Disease Less Prevalent In Hatcheries

Bacterial coldwater disease threatens wild and hatchery-raised salmonid fishes around the world, as well as the economic impacts that they offer. The disease is unfortunately spread through both contact with other fishes as well as through sexual reproduction. But a new study led by researchers at Michigan State University has uncovered some hope for fighting the fatal sickness, at least in hatcheries. Through the research, scientists at the university have found that a number of trout and salmon fishes seem to be less likely to contract the disease if they’re reared at fish hatcheries. This is in spite of a notion that fish in captivity are more likely to catch the sickness because they are living in such close proximity to others and in artificial conditions.

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Zebra Mussels Impact Lake Minnetonka

Researchers at the Minnehaha Creek Watershed District have just released the results of a five-year investigation into the impacts that zebra mussels in Lake Minnetonka have had on the lake’s water quality. Their findings reveal a lot of variation in the mussels’ effects, thanks partly to the lake’s numerous bays. In some of the water body’s bays, there are more zebra mussels while there are fewer in others. In those areas with more mussels, scientists with the District have found the biggest changes to water quality. In Wayzata Bay, where the mussel population topped out at an estimated 200,000 zebra mussels per square meter in 2014, there has been an increase in water clarity and a decrease in algae and phosphorus.

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