The pilot was departing in a tailwheel equipped airplane from a runway that was located along and above a small creek. A right crosswind of about 8 knots was prevailing at the airport. During the takeoff roll, the right wing began to rise. Full right aileron control did not prevent the right wing from continuing to rise. The airplane departed off the left edge of the runway and became airborne. It then stalled and descended about 75 ft to the ground in a near nose level attitude. The airplane received damage to the left wing, fuselage, and landing gear.