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NUTRIENT POLLUTION
In the late 1990s, Arkansas agencies urged landowners to use BMPs to keep cattle from streams. Today, 2 agencies and local owners protect these sensitive waters together- In 2006, Arkansas DEQ listed Clear Creek for E. coli. 12 years later, the creek attained the recreation standard in 2018, restoring contact recreation after BMP projects
- In 2010, Minnesota's Hay Lake was targeted for a 46-lb annual phosphorus reduction after nutrient pollution caused impairment. 12 years later, farm practices helped secure delisting
- In 1998, PA DEP listed 67 miles of Warrior Run for siltation and flow problems. 26 years later, 8.5 miles were delisted after farmers and agencies improved water qualityWarrior Run water quality has improved after years of work across Pennsylvania’s agricultural watershed. In 1998, the state listed 67 miles...31 Aug, 2026, 07.32 PM IST
- In 2006, Illinois listed 10.69 miles of Cahokia Creek as impaired. 14 years later, Heartlands Conservancy's BMPs improved the stream, leading to delisting in 2020Cahokia Creek in Illinois was impaired due to severe streambank erosion and lack of vegetation. Heartlands Conservancy used grant funding t...31 Aug, 2026, 01.31 AM IST
- In 1987, Denmark launched restoration of 2,200 hectares around the Skjern River. 19 years later, SPA status arrived in 2006 as wildlife returned to the restored wetlandsDenmark restored the Skjern River wetlands after agricultural decline and pollution. The project re-meandered over twenty kilometers of riv...31 Aug, 2026, 01.00 AM IST
- In 2006, Delaware listed the Broadkill watershed for nitrogen and phosphorus impairment. 18 years later, BMPs restored 7.6 miles of Ingrams Branch, ending the phosphorusThe restoration of Ingrams Branch is a powerful example of how best management practices can produce measurable improvements in water quali...29 Aug, 2026, 09.41 PM IST
- In 2008, Minnesota listed Fish Lake as impaired for nutrients after severe algae blooms. 16 years later, the lake improved enough to be delisted after treatments and restorationThe 2008 impairment designation was an important step because it formally recognized that the lake was not meeting the desired water-qualit...29 Aug, 2026, 04.21 AM IST
- In 1972, a 3,300-acre preservation effort began protecting the Elk River Chain of Lakes in Michigan. More than 50 years later, monitoring shows water quality remains healthyMore than half a century ago, a conservation effort in northern Michigan set out to protect an extraordinary network of waterways, and its ...29 Aug, 2026, 04.11 AM IST
- In 2021, New York assessed Cannonsville Reservoir as impaired after a 7-foot culvert blocked fish passage. 2 years later, the new culvert scored 0.88 for aquatic passageA culvert replacement project in Delaware County, New York, addressed stream-flow, erosion, sediment, and fish-passage problems along an un...29 Aug, 2026, 12.20 AM IST
- In 2002, Idaho listed the South Fork Palouse River as bacteria-impaired after livestock grazing. 14 years later, restoration helped remove it from the 2016 impaired listThe South Fork Palouse River restoration began with a problem Idaho could not ignore. In 2002, the river was listed as bacteria-impaired, w...28 Aug, 2026, 11.29 PM IST
- In 2004, Iowa listed Kent Park Lake as impaired after nutrient and sediment runoff harmed clarity. 20 years later, monitoring showed it met algae and turbidity standardsKent Park Lake in Johnson County, Iowa, experienced water-quality problems linked to nutrient and sediment delivery, resulting in its place...28 Aug, 2026, 10.46 PM IST
- In 2004, community partners began tackling Kent Park Lake's nutrient and sediment pollution. 20 years later, the lake met water quality standards and was removed from Iowa's impaired-waters list in 2024Kent Park Lake restoration took 20 years to deliver a result Iowa officials could finally recognize. The lake once struggled with nutrient ...28 Aug, 2026, 08.08 PM IST
- In 2016, researchers restored 452 meters of Maryland's Muddy Creek with woodchips, sand and gravel. 2 years later, monitoring found suspended sediment fell 73.8%, improving stream functionMuddy Creek is a tributary of the Rhode River and flows through the Smithsonian Environmental Research Center, an important site for ecolog...28 Aug, 2026, 03.07 AM IST
- In 1994, Illinois EPA listed 50.75 miles of Silver Creek as impaired by farm pollution. 28 years later, Illinois removed the creek from its impaired list in 2022Upper Silver Creek in Illinois has been removed from an impaired waters list. Best management practices were installed to reduce pollution ...27 Aug, 2026, 10.50 PM IST
- In 2018, New York's Cortland County funded 3 culvert and stream projects. 5 years later, all 3 sites improved from severe barriers to insignificant barriers for better fish passageCortland County projects fit into a broader New York effort to identify and address barriers to aquatic organism passage. New York's Depart...27 Aug, 2026, 06.15 PM IST
- In Chicago, a Shedd Aquarium-backed team built floating gardens, and after years on the Chicago River, they've now spread to Bubbly CreekIn Chicago's Bubbly Creek, innovative floating wetlands are taking center stage in the fight against pollution. These modular systems not o...26 Aug, 2026, 06.30 PM IST
- World’s biggest citrus waste-to-energy plant is being built in Brazil: 2.1-million-square-foot facility to turn orange juice waste into 1.77 million cubic feet of biogas every dayBrazil is building the world’s biggest citrus waste-to-energy plant, a 2.1-million-square-foot facility designed to transform orange juice ...24 Aug, 2026, 07.14 PM IST
- In a five-year trial reported in 2025, scientists mixed discarded oyster shells into acidic farmland; peanut yields rose by up to 37%Researchers repurposed oyster shell waste to improve sour farmland in China. This five-year trial significantly boosted peanut crop yields ...19 Aug, 2026, 06.30 PM IST
- Every day, 50,000 litres of polluted water flow from South Africa's Stiebeuel River into natural filter beds, where stones, sand and biochar clean it in 5 days, removing 99% of harmful bacteria and creating water for irrigationResearchers in South Africa are using a nature-based filtration system to treat polluted water from the Stiebeuel River in Franschhoek. At ...19 Aug, 2026, 01.05 AM IST
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