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 Name	Lake # -	- County	- Last Updated	- Microcystin (ppb)	- E.coli Bacteria
High E.coli Bacteria Levels
	Big Indian Creek Reservoir	2	Gage	09/27/2007	0.01	613
	Branched Oak Reservoir	5a	Lancaster	09/27/2007	0.36	488
	Carter Lake	7	Douglas	09/27/2007	0.97	345
	Cub Creek #12A	9	Gage	09/27/2007	0.25	24,192
	Johnson Lake	17	Gosper	09/25/2007	No Samples	866
	Johnson Lake	17a	Gosper	09/27/2007	0.22	517
	Swan Creek #5A	37	Saline	09/27/2007	7.11	649
Other Lakes Sampled
	Bader Park Lake #2	1	Merrick	09/27/2007	0.01	1
	Bluestem Reservoir	3	Lancaster	09/27/2007	0.02	3
	Box Butte Reservoir	4	Dawes	09/27/2007	0.01	0
	Branched Oak Reservoir	5	Lancaster	09/27/2007	0.36	31
	Bridgeport Middle Lake	6	Morrill	09/27/2007	0.04	0
	Conestoga Reservoir	8	Lancaster	09/27/2007	5.19	7
	Enders Reservoir	10	Chase	09/27/2007	0.01	2
	Fremont Lake #9	11	Dodge	09/28/2007	0.02	0
	Fremont Lake #10	12	Dodge	09/28/2007	0.03	0
	Fremont Lake #20	13	Dodge	09/28/2007	3.25	0
	Fremont Lake #20	13a	Dodge	09/28/2007	11.56	2
	Harlan Reservoir	14	Harlan	09/27/2007	5.3	101
	Holmes Lake	15	Lancaster	09/27/2007	0.04	57
	Iron Horse Trail Lake	16	Pawnee	09/27/2007	0.44	5
	Kirkman’s Cove Reservoir	18	Pawnee	09/27/2007	0.01	9
	Lake McConaughy	19	Keith	09/27/2007	0.01	3
	Lake North	20	Platte	09/27/2007	0.01	144
	Lake Yankton	21	Cedar	09/19/2007	0	2
	Lewis & Clark Reservoir	22	Knox	09/19/2007	0	13
	Lone Star Reservoir	23	Fillmore	09/27/2007	0.02	142
	Louisville Lake #2	24	Cass	09/27/2007	0	1
	Maloney Reservoir	25	Lincoln	09/27/2007	0.01	5
	Maskenthine Reservoir	26	Stanton	09/27/2007	0.01	0
	Medicine Creek Reservoir	27	Frontier	09/27/2007	0.04	23
	Merritt Reservoir	28	Cherry	09/20/2007	11.88	13
	Minatare Lake	29	Scotts Bluff	09/27/2007	0.13	45
	Mormon Island Lake	30	Hall	09/27/2007	0	1
	Oliver Reservoir	31	Kimball	09/19/2007	0.05	2
	Pawnee Reservoir	32	Lancaster	09/27/2007	11.77	24
	Pawnee Reservoir	32a	Lancaster	09/20/2007	9.46	49
	Red Willow Reservoir	33	Frontier	09/27/2007	0.60	3
	Rockford Reservoir	34	Gage	09/27/2007	0.02	5
	Silver Creek City Pond	35	Merrick	09/27/2007	0.01	0
	Sutherland Reservoir	36	Lincoln	09/27/2007	0.08	16
	Swanson Reservoir	38	Hitchcock	09/27/2007	0	8
	Two Rivers SRA Lake #4	39	Douglas	09/27/2007	0	14
	Valentine Mill Pond	40	Cherry	09/20/2007	0	24
	Wagon Train Lake	41	Lancaster	09/27/2007	0	1
	WellFleet Reservoir	42	Frontier	09/27/2007	0	5
	Willow Creek Reservoir	43	Pierce	09/27/2007	0.16	23
	Wirth Brothers Lake	44	Johnson	09/27/2007	0.01	1

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