Numbered Publications: AEN
AEN-128: Sediment Fingerprinting
Carmen Agouridis, Somsubhra Chattopadhyay | Feb. 9, 2016 (New)
Sediments in waterbodies cause a number of problems such as harming aquatic habitats, filling reservoirs, and worsening flooding. High amounts of sediment in the water inhibit the ability of fish and aquatic macroinvertebrates to move, breathe, hunt and reproduce. Accumulated sediments in reservoirs reduces their useful life and increases costs associated with maintenance. Streams experiencing such sediment buildup carry less water during storm events.
AEN-126: Common Hazards in Karst Terrain
Carmen Agouridis | Nov. 11, 2014 (New)
Karst refers to terrain largely drained by subsurface conduits and caves. Karst landscapes are characterized by surface features such as springs, sinkholes, shallow depressions, and rolling hills. Karst regions are also known for their subsurface or below-ground features such as conduits and caves. What makes a karst region unique is the way runoff drains from the land. In karst regions, some of the runoff flows into surface features such as sinkholes where it then travels underground. Some of this infiltrated water re-emerges at springs, and some continues moving underground.
AEN-125: Closing a Liquid Manure Storage Structure
Steve Higgins, Kylie Schmidt | Aug. 11, 2014 (New)
Liquid manure storage structures, such as a lagoon, holding pond, or pit, serve an essential purpose on an active livestock operation. However, when this structure is no longer actively managed it can become a major liability to the producer because of its potential to have a discharge. The discharge from a liquid manure storage structure can contain pollutants such as nutrients, heavy metals, hormones, pathogens, and agriculture chemicals, all of which can pose serious threats to human health and aquatic ecosystems. Because of the pollution potential, livestock producers ceasing their operation are required to close their liquid manure storage structure(s) as part of their Kentucky No Discharge Operational Permit. To help offset the costs of closing the structure, producers may want to apply for cost share funds through the Division of Conservation. Before beginning to close a liquid manure structure, the Kentucky Division of Water (KDOW) must be provided with a closure plan. This publication outlines the preferred practices and steps for closing a liquid manure structure to meet the guidelines of the KDOW.
AEN-124: Streambank Erosion
Carmen Agouridis, Matthew Burnette | Jul. 23, 2014 (New)
Streambank erosion refers to the removal of soil and other material, such as rock and vegetation, from the streambank. Streambank erosion is a naturally occurring process, but the rate at which it occurs is often increased by anthropogenic or human activities such as urbanization and agriculture. Changes in land use can cause streambanks to erode at rates much faster than those seen in natural, undisturbed systems.
AEN-123: Lowering Somatic Cell Counts with Best Management Practices
Steve Higgins, Kylie Schmidt, Sarah Wightman | May. 14, 2014 (New)
As health and food safety concerns grow, dairy producers are facing more stringent regulations. In 2010, the European Union (EU) set the somatic cell count (SCC) upper limit, an indicator of milk quality, for exported milk at 400,000 cells per milliliter. However, the current U.S. SCC limit is 750,000 cells per milliliter. As of January 2012, any U.S. milk used in export markets must meet the EU standards. It is projected that US milk processors will gradually adopt the EU upper limit, making it difficult for dairy producers to sell milk containing more than 400,000 somatic cells per milliliter. Dairy producers will have to find innovative and cost-effective ways to reduce the somatic cell count of their milk. This publication will discuss how agriculture best management practices can be used to lower SCC.
AEN-121: Increasing Dry Cow and Bred Heifer Performance with Environmental Management
Steve Higgins, Kylie Schmidt | Apr. 23, 2014 (New)
Producers must understand that dry cows and bred heifers are the next milking herd, so focusing on their management can maintain or actually increase future profitability. This publication focuses on environmental management strategies that improve dry cow and bred heifer performance.
AEN-122: Restoring Streams
Carmen Agouridis, Evan Wesley | Mar. 4, 2014 (New)
Stream restoration is the re-establishment of the structure (dimension, pattern, and profile) and function (transport of water, sediment, and nutrients; habitat provision) of a degraded stream as closely as possible to pre-disturbance conditions.
AEN-120: Groundwater Quality
Carmen Agouridis | Jan. 6, 2014 (New)
Groundwater is an important water source for activities such as drinking, bathing, cooking, and crop irrigation. Keeping our groundwater sources clean is becoming more challenging with an ever growing population. In watersheds underlain with karst, such as many of those in Kentucky, the groundwater is more susceptible to contamination. This is because surface waters, such as runoff and in some cases streamflow, travel into the subsurface of karst by way of fractures, sinkholes, swallow holes, conduits and caves Such direct paths into the groundwater mean that pollutants reach the aquifer much more quickly with little to no filtration. Thus, while waters from springs and wells may look clean, they may actually contain unsafe levels of pollutants such as bacteria and nitrogen.
AEN-119: Keeping Trash Out of Streams
Carmen Agouridis, Rachel Williams | Nov. 14, 2013 (New)
Fresh water is an essential natural resource that is used every day for drinking, bathing, cooking, cleaning, and recreation. In Kentucky, the water used for these tasks mainly comes from streams and rivers, but it can also come from groundwater. Because our streams, rivers, and aquifers are so vital to our daily lives, it is important that we protect them from trash, debris, and other pollutants found in stormwater. What happens to the land around these water sources affects their condition and health.
AEN-118: Managing Stormwater Using Low Impact Development (LID) Techniques
Carmen Agouridis, John McMaine | Aug. 21, 2013 (New)
As more land is covered by impervious surfaces, less rainfall infiltrates into the ground and instead becomes runoff. Too much runoff is problematic. Flooding increases, streambanks erode, and water quality is reduced. An increase of impervious area of as little 10 percent has been shown to negatively impact streams. The purpose of this publication is to explain low impact development strategies and how they can be used to improve stormwater management by reducing impacts on streams.
