ON JANUARY 27, 1993, A SOUTHERN PACIFIC FREIGHT TRAIN DERAILED. FOUR HELPER LOCOMOTIVES WERE THROWN FROM THE TRACKS. THE SADDLE TANKS OF THREE LOCOMOTIVES SPILLED A TOTAL OF 6100 GALLONS OF DIESEL FUEL INTO YONCALLA CREEK AND ADJOINING WETLANDS. THE SPILL ENDANGERED THE DRINKING WATER SUPPLY OF NEARBY YONCALLA, OREGON. SEVERAL SPECIES THAT THE U.S. FISH AND WILDLIFE CONSIDERS TO BE CANDIDATES FOR LISTING UNDER THE ENDANGERED SPECIES ACT LIVE IN THIS HABITAT. THE OIL POLLUTION FUND WAS OPENED TO FINANCE THE RECOVERY AND REHABILITATION EFFORT UNDERTAKEN FOR ONE SUCH SPECIES, THE WESTERN POND TURTLE.