The aircraft crashed shortly after takeoff when the engine lost power during initial climb. This aircraft had not been flown for about one month. The pilot was aware of water accumulation in C-182 bladder equipped aircraft, so he drained the gascolator for an added length of time. The wing tanks were also drained. Start, taxi and run-up were normal. After departure, a climbing turn was made. At 1500 ft the pilot felt the aircraft lose power. He pumped the throttle to no avail. He called the tower and stated that he 'had a problem and was coming in.' He was cleared to land on runway 33R. The pilot declared an emergency and said he was going for any runway he could reach. This transmission was blocked by the tower calling at the same time. The pilot blocked further transmissions by keying his mike inadvertently. As he maneuvered for runway 04, he saw a potential conflict with a B-737 approaching runway 28, so he diverted to runway 15R. When he could not make that, he turned right and mushed into the ground to the left of 33L. The landing gear collapsed at ground contact.