Iowa Source Water Protection: Guidebook, November, 18, 2014

There are a few basic fundamentals you need before starting a source water protection project. These include information on your community’s wells (or intakes), aquifer, source water area, and potential contaminants. All of these essential items should be included in your community’s source water information, you may find this information in the workbook and guidebook.

Planning for Water Quality, July 2012

The following document serves two purposes. First, the Environmental Protection Agency (EPA) requires a state to develop an approved Non-point Source Management Plan (NPSMP or Plan) that encompasses the nine key elements, described in full in Appendix A, to be eligible for federal Clean Water Act Section 319 funding. Second, the Plan serves as a representation of Iowa’s vision, goals, objectives and potential action steps to reduce non-point source pollution and improve water quality over the next five to ten years. This plan is not intended to be, nor should it be, limited to the Department of Natural Resources or Iowa’s Section 319 Program, but rather reflects the collective efforts and intents of the core partners and stakeholder groups that worked together to develop the goals identified herein and programmatic means of achieving those goals.

Oxygen consumption of Litopenaeus vannamei juveniles in heterotrophic medium with zero water exchange

This work aimed at determining the dissolved oxygen consumption rate of Litopenaeus vannamei juveniles maintained in a microbial biofloc raceway system at high density with no aeration. Three 4 L bottles were filled for each treatment, sealed hermetically, and placed in an enclosed greenhouse raceway system. Four shrimp (13.2±1.42 g) were assigned to two sets of the bottles, which underwent the following treatments: light conditions with no shrimp; dark conditions with no shrimp; light conditions with shrimp; and dark conditions with shrimp. Dissolved oxygen content was measured every 10 min for 30 min. A quadratic behavior was observed in dissolved oxygen concentration over time. Significant differences for oxigen consumption were observed only at 10 and 20 min between shrimp maintained in the dark and those under light conditions. At 10 min, a higher value was observed in shrimp maintained under light, and at 20 min, in the dark. Significant differences between 10 and 20 min and between 10 and 30 min were observed when oxygen consumption was analyzed over time in the presence of light. Under dark conditions there were significant differences only between 20 and 30 min. Lethal oxygen concentration (0.65 mg L-1) would be reached in less than one hour either under light or dark conditions with no aeration.

Water Quality Summary 2000-2004

Summary of water quality data collected from Iowa streams from 2000 through 2004.

Water Quality Summary 2008

Summary of water quality data collected from streams in 2008

Water Quality Summary 2000-2008

Water quality summary of stream data collected from 2000 through 2008.

Community Water Sampling Event

Summary of water monitoring conducted by the City of Bondurant and Bondurant-Farrar school students of sites in and around Bondurant.

Water Quality Impairments in Iowa

Description of the impaired water listing process for Iowa.

Water Quality Summary, 2009

Summary of stream water quality data collected in 2009.

Water Quality Summary, 2000-2009

Summary of stream water quality data collected from 2000 through 2009.

Water Quality Summary, 2000-2010

Summary of water quality data from stream in Iowa from 2000 through 2010.

Water Quality Summary, 2010

Summary of water quality data collected from stream in 2010.

Water Quality Summary, 2000-2011

Summary of stream water quality data collected from 2000 through 2011.

Water Quality Summary, 2011

Summary of stream water quality data for 2011.

Lake Water Quality Summary, 2000-2011

Summary of lake water quality data collected from 2000 through 2011.