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NUTRIENT IMPAIRMENT
In 2006, Kentucky identified nutrient problems along 12.8 miles of Fleming Creek. 18 years later, monitoring showed the stream could fully support its aquatic lifeFleming Creek in northeast Kentucky has moved from nutrient-related impairment to full support for its warm water aquatic habitat designate...- In 2004, Illinois began Cedar Lake restoration with 3 projects to curb erosion. 18 years later, Cedar Creek was delisted for 3 impairments after sediment and TSS improvedCedar Lake erosion restoration Illinois: Extensive erosion restoration efforts at Cedar Lake have significantly improved water quality. Pro...
- A decade ago, Maryland Agriculture restored 2 farms to improve Little Antietam Creek habitat. Today, 10 years of monitoring show mayflies, caddisflies and trout thrivingLittle Antietam Creek restoration: A stream restoration project on Little Antietam Creek shows positive changes. The project addressed nutr...
- In 2016, Indiana found very poor fish health in 1.27 miles of Big Branch after years of pollution. 7 years later, its fish score reached 48 and the segment was clearedBig Branch’s recovery is ultimately a reminder that environmental restoration is often measured in years rather than weeks. The stream did ...
- In 2012, Indiana began protecting Flat Creek, a 54-mile stream affected by pollution. 10 years later, multiple stretches had recovered enough to be removed from the listFlat Creek in Indiana experienced significant water quality issues for years. A 2012 plan initiated watershed improvement efforts and best ...
- In 1996, Illinois added Lake Decatur to its pollution list after farm runoff harmed its water. 28 years later, nitrogen levels fell below the 7.8 mg/L limitLake Decatur's water quality improved after implementing agricultural best management practices. Efforts to reduce nutrient and sediment ru...
- In 2012, Jefferson County SWCD teamed up with local groups to restore Indian-Kentuck Creek. 12 years later, conservation work cut nitrogen pollution by 81,259 pounds a yearAgricultural best management practices improved water quality in the Brushy Fork subwatershed. Nutrient and phosphorus inputs were reduced,...
- In 2007, Florida's Pinellas County won EPA approval for a nutrient plan for Lake Seminole. 17 years later, chlorophyll a dropped from 124 to 36 µg/L, proving restoration workedLake Seminole restoration is showing something Florida communities rarely get to see: a troubled urban lake actually getting better. In Pin...
- In 2002, Illinois listed Sugar Creek as polluted by 2 water-quality problems. 20 years later, 1 was cleared after cleanup efforts helped restore healthy oxygen levelsSugar Creek's dissolved oxygen impairment was cleared after twenty years of restoration work. Projects across the watershed focused on redu...
- In 2006, Delaware listed Broadkill River waters as impaired for nutrients. 18 years later, BMPs helped restore 7.6 miles of Ingrams Branch, bringing phosphorus levels below the state thresholdIngrams Branch in Delaware has reached an important water-quality milestone. The 7.6-mile stream segment was once impaired by excess phosph...
- In 1996, Illinois listed Lake Decatur for phosphorus and nitrogen pollution. 25 years later, 3 grants helped Decatur expand BMPs and improve water quality in the lakeLake Decatur has struggled with agricultural runoff pollution for several years, prompting the launch of a water quality initiative aimed a...
- 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 togetherFulton County faced water quality issues, prompting conservation efforts in the late 1990s. Landowners embraced livestock exclusion and con...
- 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 delistingIn 2022, Hay Lake triumphantly exited the impaired waters list, a commendable feat driven by rigorous nutrient reduction initiatives launch...
- 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...
- In 2004, Minnesota's East Boot Lake was listed for nutrients with a 27-pound phosphorus target. 18 years later, targeted projects improved water quality and led to delisting in 2022East Boot Lake in Minnesota was removed from an impaired waters list after eighteen years. Targeted watershed and in-lake management strate...
- 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...
- 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...
- 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...
- 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 ...
- 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 ...
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