CASPER — The Wyoming Game and Fish Department will permanently close Jessica’s Pond, a popular community fishery in the Casper Region, this month following the confirmation of invasive New Zealand mudsnails in October 2025. 

The pond will be filled in and the area reclaimed in order to remove the threat of further species spread. The decision comes after a full assessment of the location and the determination that the risk and proximity to the Dan Speas Fish Hatchery would be too great if the pond remained open.

“We recognize the importance of this location as a community fishery and popular recreation spot,” Game and Fish Chief of Fisheries Alan Osterland said. “However, the rate of spread from these invasive snails has led us to the decision to permanently close the location and reclaim the site to prevent further spread.”

While there is currently a presence of mudsnails in the North Platte River, the hatchery remains clear of the invasive species. 

The North Platte River - Wyoming Flycasters Memorial Public Access Area, adjacent to the hatchery, will remain closed due to mudsnail concerns.

The Casper Region remains a premier destination for anglers, offering world-class fishing along the North Platte River. For those seeking accessible options, Yesness Pond, located in Casper, features ADA-compliant trails and access points, and is an excellent alternative to Jessica’s Pond. Detailed maps, regulations and access information for Wyoming fishing locations are available on the Game and Fish website.

Anglers are reminded to "Clean, Drain and Dry" all equipment when using the access area and all Wyoming waters. Scrubbing stations for boots are located near many fishing access points. Other precautions, such as seasonal watercraft inspections for watercraft entering the state, are a requirement before going out on Wyoming waterways.

More information on aquatic invasive species and how to prevent infestations in Wyoming waterways can be found on the Game and Fish website.

—WGFD—