No. of Observations

15,844

No. of Species

1,382

No. of Sites

467

Observations by Year
2025 0
2024 1,513
2023 1,490
2022 1,282
2021 728
2020 742
2019 791
2018 760
2017 461
2016 575
2015 525
2014 578
2013 533
2012 578
2011 463
Species by Year
2025 0
2024 398
2023 398
2022 411
2021 263
2020 304
2019 264
2018 279
2017 178
2016 243
2015 226
2014 231
2013 215
2012 226
2011 231
Sites by Year
2025 0
2024 87
2023 135
2022 105
2021 84
2020 62
2019 54
2018 42
2017 42
2016 49
2015 55
2014 55
2013 51
2012 44
2011 53
Sites
Site Name Observations Last Observation
Hitaga Sand Ridge Prairie Preserve 1,183 2024-08-16
Anderson Prairie, Decorah 955 2021-09-11
700 Black Bear Bend 670 2024-10-11
1460 Douglas Ct, Marion 655 2024-08-12
Ames, Paul 586 2022-09-30
Plymouth Rock 475 2023-06-07
Wickiup Hill Outdoor Learning Area 456 2021-06-05
Matsell Bridge Natural Area 453 2024-07-24
Palisades Kepler State Park 430 2024-09-18
Wanatee County Park 368 2024-05-17
Osterholm Site 302 2011-09-05
Big Sand Mound Prairie Preserve, Muscatine County 297 2024-09-17
Pinicon Ridge Park 289 2024-08-04
MacBride Nature Recreation Area 278 2024-09-08
2505 Tullamore Lane, Ames 259 2014-07-16
Near Fairfield 244 2021-07-22
Pleasant Creek State Recreation Area, Linn County 202 2023-08-28
Red Oak Prairie 187 2024-05-15
Spilde Woods 183 2022-06-16
Shimek State Forest, Donnellson Unit 182 2024-08-18
Hayden Prairie State Wildlife Management Area 170 2024-06-30
Lionberger Environmental Preserve 170 2024-06-27
Big Sand Mound Prairie Preserve, Louisa County 161 2024-10-06
F. W. Kent Park 160 2024-08-11
Chipera Prairie Park 143 2009-09-23
View All Sites Observations for protected species or from private sites are not included in this list.