Water News Archive

Manure nitrogen application rates must be estimated annually based upon the most recently available information for manure nutrient concentration (manure sample) and the estimate of crop nutrient needs. Since this information is not typically available at the time of a permit application, estimating manure nitrogen application rates as part of a permit is, at best, an educated guess made without essential information. However, the underlying principles and assumptions that will be used to estimate manure nitrogen application rates can be defined in a permit application.

Problems sometimes occur. Lagoon depth may fall below 2-foot minimum due to leak in artificial liner, clogged inlet pipe, low flow rate into lagoon, holes in dike from plant roots or burrowing animals, not enough clay in natural soil liner or not compacted.

Harvesting Crop Residues, NebGuide G1846 Issues of crop residue harvest, including nutrient removal and effects on erosion, soil quality, water loss, and yield are discussed in this NebGuide.

Evaporation reduces the liquid volume of wastewater, returning water vapor to the environment. Solids settle to bottom and form sludge. There is an aerobic zone at the top of the wastewater layer where air movement introduces oxygen and aerobic microorganisms convert waste to carbon dioxide, ammonia, and phosphates.

Irrigation scheduling needs to begin with a discussion on soil and soil water. This is the basis of irrigation scheduling. Coarse soils, such as sands and gravels, have relatively large pores. However the number of pores is small when compared to a finer textured soil. Fine soils, like clays or clay loams, have relatively small pores. Having many small pores means that a fine textured soil can hold more water than a coarse textured soil.

The following are publications about manure and nutrient management.

There are at least seven major aquifer systems in Nebraska. By far, the High Plains/Ogallala aquifer is the largest in terms of volume of water in storage and withdrawals for irrigation. Several secondary aquifers exist in areas outside of the High Plains aquifer, providing water for irrigation, municipal supplies, and domestic use in parts of far western and far eastern Nebraska.

Pump tank regularly. Have a professional inspect and pump the tank. Conserve water and spread usage over a period of time. Manage solids. Keep hazardous materials out. Let the system work naturally. Avoid drainfield compaction. Avoid introducing excess water to the drainfield. Maintain structural integrity of the drainfield.

A collection of NebGuides developed by Nebraska Extension professionals on various drinking water topics.

On December 18, 2008, the US EPA published a final rule that clarified which livestock facilities must report air emissions from their facilities. Animal agriculture was granted an administrative exemption from reporting air emissions that normally occur from raising farm animals under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).

The key premise of low impact development (LID) is to allow natural systems to manage stormwater when and wherever possible.  LID takes advantage of existing natural features and also designs and constructs systems to imitate natural processes, for example, green roofs, bioretention gardens, and permeable pavement.