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 2Gage09/25/201416.59128
Iron Horse Trail Lake47Pawnee County09/25/201411.130
Lone Star Lake24Fillmore09/25/20144.132
Willow Creek Lake45Pierce09/25/20143.793
Hide details for High E.coli Bacteria LevelsHigh E.coli Bacteria Levels
Rockford Lake36Gage09/25/20142.67488
Hide details for Other Lakes SampledOther Lakes Sampled
Bader Park Swimming Lake 1Merrick09/25/201400
Bluestem Lake3Lancaster09/25/20142.133
Box Butte Lake4Dawes09/25/20140.992
Branched Oak Lake5aLancaster09/25/20140.86105
Branched Oak Lake5bLancaster09/25/20140.99133
Bridgeport Middle Lake6Morril09/25/201402
Calamus Lake7Garfield09/25/201404
Carter Lake8Douglas09/25/201404
Conestoga Lake9Lancaster09/25/20140.3526
Cottonwood Lake (Yankton)10Cedar09/25/2014081
Cub Creek Lake # 12A11Jefferson09/25/2014011
Cunningham Lake12Douglas09/25/201403
Davis Creek Lake13Sherman09/25/2014019
Enders Lake at East Beach14Chase09/25/201400
Fremont Lake # 1015Dodge09/25/201401
Fremont Lake # 2016aDodge09/25/201400
Fremont Lake # 2016bDodge09/25/201401
Fremont Lake # 917Dodge09/25/201400
Ft. Kearney Lake No. 750Buffalo09/25/201404
Harlan Lake18Harlan09/25/201406
Holmes Lake19Lancaster09/25/2014011
Johnson Lake20Gosper09/25/20140141
Kirkman's Cove21Richardson 09/25/2014015
Lake North22Platte09/25/20149.848
Lewis and Clark Reservoir23Knox09/25/2014013
Louisville Lake SRA No. 225Cass09/25/20140.391
Maloney Lake26Lincoln09/25/2014055
Maple Creek Recreation Area Lake49Colfax09/25/20140.330
Maskenthine Lake27Stanton09/25/20142.733
McConaughy Lake28Keith09/25/20140.272
Medicine Creek Lake29Frontier09/25/2014049
Merritt Reservoir30Cherry09/25/20149.18
Minatare Lake31Scotts Bluff09/25/201405
Mormon Island Lake32Hall09/25/20142.732
Oliver Lake33Kimball09/25/201406
Pawnee Lake34aLancaster09/25/20144.426
Pawnee Lake34bLancaster09/04/20144.5936
Red Willow Lake35Frontier09/25/2014010
Sherman Lake37Sherman09/25/201402
Sutherland Lake38Lincoln09/25/2014013
Swan Creek Lake # 5A39Saline09/25/20143.6719
Swanson Lake40Hitchcock09/25/2014023
Two Rivers SRA Lake No. 441Douglas09/25/201401
Valentine Mill Pond42Cherry09/25/2014024
Victory Lake43Dodge09/25/201400
Wagon Train Lake44Lancaster09/25/201402
Windmill Lake No. 551Buffalo09/25/201401
Wirth Brothers Lake46Johnson09/25/2014019

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