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
Big Indian Creek Lake 2Gage08/28/201420.370
Bluestem Lake3Lancaster08/28/201435.715
Iron Horse Trail Lake47Pawnee County08/28/201427.510
Kirkman's Cove21Richardson 08/28/201427.722
Willow Creek Lake45Pierce08/28/201422.751
Hide details for High E.coli Bacteria LevelsHigh E.coli Bacteria Levels
Harlan Lake18Harlan08/28/2014.19344
Hide details for Other Lakes SampledOther Lakes Sampled
Bader Park Swimming Lake 1Merrick08/28/201407
Box Butte Lake4Dawes08/28/2014.17
Branched Oak Lake5aLancaster08/28/20141.3019
Branched Oak Lake5bLancaster08/28/2014.9012
Bridgeport Middle Lake6Morril08/28/201401
Calamus Lake7Garfield08/28/2014046
Carter Lake8Douglas08/28/201405
Conestoga Lake9Lancaster08/28/2014.390
Cottonwood Lake (Yankton)10Cedar08/28/201403
Cub Creek Lake # 12A11Jefferson08/28/2014018
Cunningham Lake12Douglas08/28/201408
Davis Creek Lake13Sherman08/28/201407
Enders Lake at East Beach14Chase08/28/201401
Fremont Lake # 1015Dodge08/28/201408
Fremont Lake # 2016aDodge08/28/201402
Fremont Lake # 2016bDodge08/28/201405
Fremont Lake # 917Dodge08/28/2014.211
Ft. Kearney Lake No. 750Buffalo08/28/201401
Holmes Lake19Lancaster08/28/2014015
Johnson Lake20Gosper08/28/2014.214
Lake North22Platte08/28/2014.2013
Lewis and Clark Reservoir23Knox08/28/2014011
Lone Star Lake24Fillmore08/28/20144.9712
Louisville Lake SRA No. 225Cass08/28/2014.220
Maloney Lake26Lincoln08/28/201401
Maple Creek Recreation Area Lake49Colfax08/28/20143.854
Maskenthine Lake27Stanton08/28/20144.925
McConaughy Lake28Keith08/28/2014.564
Medicine Creek Lake29Frontier08/28/2014.2429
Merritt Reservoir30Cherry08/28/20144.9671
Minatare Lake31Scotts Bluff08/28/201400
Mormon Island Lake32Hall08/28/20142.951
Oliver Lake33Kimball08/21/20140.660
Pawnee Lake34aLancaster08/28/20148.2613
Pawnee Lake34bLancaster08/28/20144.667
Red Willow Lake35Frontier08/28/201405
Rockford Lake36Gage08/28/20140.570
Sherman Lake37Sherman08/28/2014015
Sutherland Lake38Lincoln08/28/2014042
Swan Creek Lake # 5A39Saline08/28/20146.4410
Swanson Lake40Hitchcock08/28/2014011
Two Rivers SRA Lake No. 441Douglas08/28/201403
Valentine Mill Pond42Cherry08/28/2014064
Victory Lake43Dodge08/28/201403
Wagon Train Lake44Lancaster08/28/201400
Windmill Lake No. 551Buffalo08/28/201400
Wirth Brothers Lake46Johnson08/28/2014018

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