2007 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.
Click here for more information about Health Alerts and toxic algae.

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.
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 the 2007 recreational season

Lake NameLake # -- County- Last Updated - Microcystin (ppb) - E.coli Bacteria
Hide details for High E.coli Bacteria LevelsHigh E.coli Bacteria Levels
Big Indian Creek Reservoir2Gage09/27/20070.01613
Branched Oak Reservoir5aLancaster09/27/20070.36488
Carter Lake7Douglas09/27/20070.97345
Cub Creek #12A9Gage09/27/20070.2524,192
Johnson Lake17Gosper09/25/2007No Samples866
Johnson Lake17aGosper09/27/20070.22517
Swan Creek #5A37Saline09/27/20077.11649
Hide details for Other Lakes SampledOther Lakes Sampled
Bader Park Lake #2 1Merrick09/27/20070.011
Bluestem Reservoir3Lancaster09/27/20070.023
Box Butte Reservoir4Dawes09/27/20070.010
Branched Oak Reservoir5Lancaster09/27/20070.3631
Bridgeport Middle Lake6Morrill09/27/20070.040
Conestoga Reservoir8Lancaster09/27/20075.197
Enders Reservoir10Chase09/27/20070.012
Fremont Lake #911Dodge09/28/20070.020
Fremont Lake #1012Dodge09/28/20070.030
Fremont Lake #2013Dodge09/28/20073.250
Fremont Lake #2013aDodge09/28/200711.562
Harlan Reservoir14Harlan09/27/20075.3101
Holmes Lake15Lancaster09/27/20070.0457
Iron Horse Trail Lake16Pawnee09/27/20070.445
Kirkman’s Cove Reservoir18Pawnee09/27/20070.019
Lake McConaughy19Keith09/27/20070.013
Lake North20Platte09/27/20070.01144
Lake Yankton21Cedar09/19/200702
Lewis & Clark Reservoir22Knox09/19/2007013
Lone Star Reservoir23Fillmore09/27/20070.02142
Louisville Lake #224Cass09/27/200701
Maloney Reservoir25Lincoln09/27/20070.015
Maskenthine Reservoir26Stanton09/27/20070.010
Medicine Creek Reservoir27Frontier09/27/20070.0423
Merritt Reservoir28Cherry09/20/200711.8813
Minatare Lake29Scotts Bluff09/27/20070.1345
Mormon Island Lake30Hall09/27/200701
Oliver Reservoir31Kimball09/19/20070.052
Pawnee Reservoir 32Lancaster09/27/200711.7724
Pawnee Reservoir 32aLancaster09/20/20079.4649
Red Willow Reservoir33Frontier09/27/20070.603
Rockford Reservoir34Gage09/27/20070.025
Silver Creek City Pond35Merrick09/27/20070.010
Sutherland Reservoir36Lincoln09/27/20070.0816
Swanson Reservoir38Hitchcock09/27/200708
Two Rivers SRA Lake #439Douglas09/27/2007014
Valentine Mill Pond40Cherry09/20/2007024
Wagon Train Lake41Lancaster09/27/200701
WellFleet Reservoir42Frontier09/27/200705
Willow Creek Reservoir43Pierce09/27/20070.1623
Wirth Brothers Lake44Johnson09/27/20070.011

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

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