There are two large brine storage ponds at the Enterprise Products Propane Storage facility in Harford Mills NY, outside of Ithaca and Cortland. They pump brine out of underground storage caverns and use it to store 680,000 BbLs of Propane.

https://www.enterpriseproducts.com/customers/natural-gas-liquids/#HarfordMillsNY

More about Brine Storage Ponds: https://www.layfieldgroup.com/geosynthetics/project-profiles/brine-storage-pond-storage-of-natural-gas-liquids-.aspx