---
title: Historical Data
description: "[2021 Ice Out Story Map](https://arcg.is/15bzub) [Big Floyd - Historical Ice On/Off Dates](https://www.dnr.state.mn.us/lakefind/ice.html?id=03038700) [Big Detroit - Historical Ice On/Off Dates](https://www.dnr.state.mn.us/lakefind/ice.html?id=03038100)  "
url: "https://prwd.org/resources/historical-data/"
updated: "2024-04-10"
category: Data Collection
---

# Historical Data

[2021 Ice Out Story Map](https://arcg.is/15bzub)

[Big Floyd - Historical Ice On/Off Dates](https://www.dnr.state.mn.us/lakefind/ice.html?id=03038700)

[Big Detroit - Historical Ice On/Off Dates](https://www.dnr.state.mn.us/lakefind/ice.html?id=03038100)