| Report Year: 2009 |
| Lake Iowa, Iowa County |
| Phytoplankton |
| | 6/16/2009 | 7/21/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Division | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) | Wet Mass (mg/L) |
| Bacillariophyta | 1.467 | 0.246 | 0.857 | 0.000 | 0.000 | 0.820 | 0.032 | 0.326 | 0.263 | 6.659 | 0.721 |
| Chlorophyta | 0.877 | 0.123 | 0.500 | 0.000 | 0.000 | 0.593 | 0.241 | 0.689 | 0.069 | 1.037 | 5.734 |
| Chrysophyta | 0.000 | 35.339 | 17.670 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Cryptophyta | 0.056 | 0.590 | 0.323 | 0.000 | 0.000 | 0.278 | 0.099 | 2.488 | 0.105 | 0.295 | 0.790 |
| Cyanobacteria | 72.550 | 16218.969 | 8145.759 | 0.000 | 0.000 | 112.982 | 281.853 | 39.267 | 92.456 | 55.255 | 8.242 |
| Dinophyta | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.586 | 0.000 | 0.000 | 0.290 | 1.617 | 0.000 |
| Euglenophyta | 0.021 | 0.101 | 0.061 | 0.000 | 0.000 | 0.085 | 0.005 | 0.021 | 0.023 | 0.000 | 0.000 |
| Total | 74.970 | 16255.368 | 8165.169 | 0.000 | 0.000 | 115.345 | 282.230 | 42.791 | 93.206 | 64.862 | 15.487 |
| Taxonomic Richness | 24 | 18 | 21 | 0 | 0 | 9 | 6 | 6 | 7 | 8 | 6 |
| Cyanobacteria Cell Counts(k)/ml | 140.850 | 90561.835 | 45351.342 | 0.000 | 0.000 | 104.231 | 272.531 | 129.680 | 73.797 | 68.308 | 43.002 |
|