Find an Overwintering Site Near You


Use the map below to find an overwintering site near you by zooming in to areas you are interested in visiting. You can click each site to get some basic information such as the site name, the last time the site was monitored, how many monarchs were counted, if it has public access, etc. Please note that there are three types of sites that need monitoring – see a description of each at the bottom of this page.

Once you find a site you would like to monitor, make note of the site name and site ID and then head over to our Sign up to Monitor page to sign up! If you have any questions regarding a site you’re interested in monitoring, get in touch with the coordinator for that region. Do you know about a site that’s not included on the map? It’s possible we didn’t include it because of privacy or accessibility concerns. You can check in with the Xerces’ monarch coordinator to find out.


A Note on Site Access
Please note that we have not included known a handful of sensitive locations on this map due to concerns by the landowner. The popup for each site will let you know what type of access to expect at the site. There are three types:

1) Open access: These sites are generally open to the public and do not need permission to visit. However, some of these sites (such as those located on State Park lands or in botanic gardens) require day-use fees or entrance fees. Monitors are responsible for having the appropriate recreation pass or paying the day use fee to count this site.

2) Private – permission needed to access site: These sites are usually private homes or golf course sites and surveys must be coordinated with the owner or manager of the property. The Xerces monarch coordinator will provide all the information and contacts necessary to facilitate this access.

3) Unknown access – might be private: This category includes many of our historic sites that have not been monitored in recent years. These can be great sites for small groups to adopt and investigate! Often, we are not entirely sure where these sites are located, if they are still in use, or who owns the property on which they are located. For these types of sites, we need a special kind of monitor! Are you interested in helping us figure out where these sites are and if they still exist? We need your help looking for historic sites based on descriptive location information. Monitoring these sites means taking on an additional challenge – we’ll need you to survey an entire neighborhood or park and report back on your findings. Monitors for these sites will work closely with the WMTC coordinator to document and monitor potential overwintering areas.