Winter RV dumping: which stations stay open

• Clyde Holiday SP (OR): open March through November (ODOT).
• Bruneau Dunes SP (ID): winterization began Oct 18, 2026; dump stations have no water (park page).
• Castle Rocks SP (ID): dump station water generally June to mid/late October (park page).
• Winchester Lake SP (ID): dump still open, water off (park page).
• Washington: WSDOT shows live status per station (list).

verified 2026-10-22