Information gained during each of these investigations was shared with appropriate federal authorities and was the subject of hearings by several Congressional committees.

Paul J. Browne, a police spokesman, said the police do not share immigration information of crime victims or witnesses with federal authorities.

The United States shared some of its satellite images of the quake-stricken areas with Chinese authorities.

"We are sharing all our information with authorities so they can track down the source."

The officials also said their information had been shared with American authorities.

"We've shared this as appropriate with law-enforcement authorities in the United States, and there are a number of different counterintelligence investigations proceeding from this."

This database is not shared with authorities, nor can inquiries be made regarding the contents of the database.

"At that time, the financial authorities judged it was premature to share the information with other authorities."

States are the sole trustees of groundwater, whereas oversight for other natural resources - surface water, plants, birds and fish - is shared with federal authorities.

The plan will be shared with other local authorities located along the route as an encouragement to carry out similar recovery work.