2014 Toxic Blue-green Algae
and Bacteria Sampling Results


NDEQ conducts weekly or bi-weekly sampling for toxic blue-green algae and bacteria at a number of public recreational lakes across Nebraska from May through September, and these results are updated weekly. Samples are typically collected on Monday and posted on the web site on Thursday or Friday.

At the top of the table below is a list of all
Current Lake(s) on Health Alert for toxic blue-green algae. Lakes that have been placed on Health Alert must subsequently have two consecutive weeks of low readings before the alert is ended. Samples above 20 ppb microcystin are placed on alert.

For more information about health alerts and what to look for, go to
Precautions and Facts Regarding Toxic Algae at Nebraska Lakes.

For more information about the history of toxic algae sampling in Nebraska, go to
Cyanobacteria: The Nebraska Experience

The next category, High E. Coli Bacteria Readings, lists lakes that showed unusually high readings of bacteria in the most recent sampling, which can also be a health concern. Samples above 235 counts/ 100 ml water are considered high.

Click here for more information about bacteria and its potential health effects.

The last category, Other Lakes Sampled, lists the results for lakes which are not under Health Alert for toxic algae, and their most recent sample results for bacteria are considered low.

Click on any lake name on the table below to view a chart of that lake’s sample results for toxic algae (Microcystins) and E.coli bacteria for this year.

Lake NameLake # -- County- Last Updated - Microcystin (ppb) - E.coli Bacteria
Hide details for Current Lake(s) on Health AlertCurrent Lake(s) on Health Alert
Swan Creek Lake # 5A39Saline07/31/201413.33
Hide details for Other Lakes SampledOther Lakes Sampled
Bader Park Swimming Lake 1Merrick07/31/201400
Big Indian Creek Lake 2Gage07/31/20144.990
Bluestem Lake3Lancaster07/31/20140.860
Box Butte Lake4Dawes07/31/201401
Branched Oak Lake5aLancaster07/31/20141.062
Branched Oak Lake5bLancaster07/31/20140.962
Bridgeport Middle Lake6Morril07/31/201404
Calamus Lake7Garfield07/31/201402
Carter Lake8Douglas07/31/20140.211
Conestoga Lake9Lancaster07/31/20144.650
Cottonwood Lake (Yankton)10Cedar07/31/2014010
Cub Creek Lake # 12A11Jefferson07/31/20140.2215
Cunningham Lake12Douglas07/31/20140.120
Davis Creek Lake13Sherman07/31/2014010
Enders Lake at East Beach14Chase07/31/20140.691
Fremont Lake # 1015Dodge07/31/201402
Fremont Lake # 2016aDodge07/31/201401
Fremont Lake # 2016bDodge07/31/201401
Fremont Lake # 917Dodge07/31/20140.1870
Ft. Kearney Lake No. 750Buffalo07/31/201408
Harlan Lake18Harlan07/31/20140.5820
Holmes Lake19Lancaster07/31/20140.1699
Iron Horse Trail Lake47Pawnee County07/31/20149.8759
Johnson Lake20Gosper07/31/20140.250
Kirkman's Cove21Richardson 07/31/20141.494
Lake North22Platte07/31/201402
Lewis and Clark Reservoir23Knox07/31/20140.139
Lone Star Lake24Fillmore07/31/20144.312
Louisville Lake SRA No. 225Cass07/31/20140.840
Maloney Lake26Lincoln07/31/20140.26
Maple Creek Recreation Area Lake49Colfax07/31/20143.131
Maskenthine Lake27Stanton07/31/20142.366
McConaughy Lake28Keith07/31/2014037
Medicine Creek Lake29Frontier07/31/20140.40
Merritt Reservoir30Cherry07/31/20142.011
Minatare Lake31Scotts Bluff07/31/201402
Mormon Island Lake32Hall07/31/20141.6126
Oliver Lake33Kimball07/31/20140.539
Pawnee Lake34aLancaster07/31/20141.070
Pawnee Lake34bLancaster07/31/20140.870
Red Willow Lake35Frontier07/31/20141.234
Rockford Lake36Gage07/31/20143.412
Sherman Lake37Sherman07/31/2014025
Sutherland Lake38Lincoln07/31/201400
Swanson Lake40Hitchcock07/31/20140.290
Two Rivers SRA Lake No. 441Douglas07/31/201408
Valentine Mill Pond42Cherry07/31/2014035
Victory Lake43Dodge07/31/20140.162
Wagon Train Lake44Lancaster07/31/20140109
Willow Creek Lake45Pierce07/31/201411.9710
Windmill Lake No. 551Buffalo07/31/201401
Wirth Brothers Lake46Johnson07/31/20140.1530


The map below shows the locations of the lakes referred to in the table above

Bader Park Lake Big Indian Creek Lake Bluestem Lake Box Butte Lake Branched Oak Lake Bridgeport Middle Lake Calamus Lake Carter Lake Conestoga Lake Cottonwood Lake (Yankton) Cub Creek Lake Cunningham Lake Davis Creek Lake Enders Lake Fremont Lake Harlan Lake Holmes Lake Johnson Lake Kirkman's Cove Lake North Lewis and Clark Reservoir Lone Star Lake Louisville Lake Maloney Lake Maskenthine Lake McConaughy Lake Medicine Creek Lake Merritt Reservoir Minatare Lake Mormon Island Lake Oliver Lake Pawnee Lake Red Willow Lake Rockford Lake Sherman Lake Sutherland Lake Swan Creek Lake # 5A Swanson Lake Two Rivers SRA Lake Valentine Mill Pond Wagon Train Lake Willow Creek Lake Wirth Brothers Lake Iron Horse Trail Lake Ed Zorinsky Lake Maple Creek SRA Lake Ft. Kearny Lake No. 7 Windmill Lake No. 5

The links below will take you to the sampling results taken during the recreational seasons ( May through September) for 2013, 2012, 2011, 2010, 2009, 2008 and 2007.

Updated information regarding 2014 toxic blue-green algae and bacteria sampling will be posted on the page staring May 9, 2014

2013 Bacteria and Toxic Algae Monitoring: Weekly Results

2012 Bacteria and Toxic Algae Monitoring: Weekly Results

2011 Bacteria and Toxic Algae Monitoring: Weekly Results

2010 Bacteria and Toxic Algae Monitoring: Weekly Results

2009 Bacteria and Toxic Algae Monitoring: Weekly Results

2008 Bacteria and Toxic Algae Monitoring: Weekly Results

2007 Bacteria and Toxic Algae Monitoring: Weekly Results



Nebraska Department of Environmental Quality
1200 "N" Street, Suite 400
PO Pox 98922
Lincoln, Nebraska 68509
(402) 471-2186