43 CFR 2569.407: Is there a limit to how much water frontage my selection can include?

Generally, yes. You will normally be limited to a half-mile along the shore of a navigable water body, referred to as 160 rods (one half-mile) in the regulations at 43 CFR part 2090, subpart 2094. If you apply for land that extends more than 160 rods (one half-mile), the BLM will treat your application as a request to waive this limitation. As explained in 43 CFR 2094.2, the BLM can waive the half-mile limitation if the BLM determines the land is not needed for a harborage, wharf, or boat landing area, and that a waiver will not harm the public interest. If the BLM determines it cannot waive the 160-rod (one half-mile) limitation, the BLM will issue a decision finding your selection includes lands that are not available Federal lands and then follow the procedures set out at § 2569.503.