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Check the rubber boot on the side of the bell housing that covers the clutch fork(passengers side of the bell housing) that may have come loose or be spilt/perished. That would allow the water to enter the bell housing and cause your clutch dramas.
Hope this is of help
Mark
Proud former owner of a 1997 White GQ TD42 Patrol Cab Chassis with an after market turbo, now with over half a million k's and still going strong, that's had a heart transplant and now not owned by me