system: You are a legal assistant. Answer concisely and accurately. When legal text is provided, rely on it and do not invent facts.

user: Read the following U.S. Supreme Court case excerpt and classify it into the correct legal issue area. Excerpt: 432 U.S. 40 97 S.Ct. 2915 53 L.Ed.2d 94 UNITED STATES, plaintiff,v.State of CALIFORNIA. No. 5, Orig. Supreme Court of the United States June 13, 1977 1 The joint motion for entry of a second supplemental decree is granted. SECOND SUPPLEMENTAL DECREE 2 For the purpose of identifying with greater particularity parts of the boundary line, as defined by the Supplemental Decree of January 31, 1966, 382 U.S. 448, 86 S.Ct. 607, 15 L.Ed.2d 517, between the submerged lands of the United States and the submerged lands of the State of California, it is ORDERED, ADJUDGED AND DECREED that this Court's Supplemental Decree of January 31, 1966, be, and the same is hereby, further supplemented as follows: 3 1. Closing Lines Across Entrances to Bodies of Inland Waters 4 a. The inland waters of the following bodies of water are enclosed by straight lines between the mean lower low-water lines at the seaward ends of the jetties located at their mouths: 1. Humboldt Bay 2. Port Hueneme 3. Santa Ana River 5 4. Agua Hediona Lagoon b. The inland waters of San Francisco Bay are those enclosed by a series of straight lines from the southwestern head of Point Bonita (37$48$56$N, 122$31$44$W); thence to the western edge of an unnamed island immediately to the south (37$48$55$N, 122$31$44.2$W); thence southward to the western edge of a second unnamed island (37$48$53$N, 122$31$44$W); thence southward to the western edge of a third unnamed island (37$46$57$N, 122$30$52$W); thence to a western head of Point Lobos (37$46$53$N, 122$30$49$W). The length of this closing line is 2.18 nautical miles. 6 c. The inland waters of Bodega-Tomales Bay are those enclosed by a straight line drawn from Bodega Head (38$17$53.8$N, 123$03$25.3$W); thence to the western edge of an unnamed island northwest of Tomales Point (38$14$28.4$N, 122$59$41.5$W); thence southward to Tomales Point (38$14$26.5$N, 122$59$39$W). 7 d. The closing lines delineated in the foregoing paragraph are part of the coastline of California. The foregoing is without prejudice to the right of either party to assert or deny that other closing lines are part of the coastline of California for purposes of establishing the Federal-State boundary line under the Submerged Lands Act, 67 Stat. 29, as amended. 2. Artificial Extensions of the Coastline 8 The mean lower low-water line along each of the following structures is part of the coastline of California for purposes of establishing the Federal-State boundary line under the Submerged Lands Act: 9 a. The Morro Bay breakwater 10 b. The Port San Luis breakwater 11 c. The Santa Barbara breakwater 12 d. The Ventura Marina breakwater 13 e. The Channel Islands Harbor breakwater f. Three rubble groins at Point Mugu 14 g. The Santa Monica breakwater 15 h. The venice Beach groin 16 i. The Marina del Rey breakwater 17 j. Three rubble groins along Dockweiler Beach 18 k. The Redondo Beach breakwater 19 l. Two harbor jetties at Newport Bay 20 m. The Dana Point breakwater 21 n. The Oceanside breakwater 22 o. Two harbor jetties at entrance to Mission Bay 23 p. The Zuniga jetty at San Diego (including the southern seaward end of this entire structure) 24 The foregoing is without prejudice to the right of either party to assert or deny that other artificial structures are part of the coastline of California for purposes of establishing the Federal-State boundary line under the Submerged Lands Act. 25 3. The Court retains jurisdiction to entertain such further proceedings, enter such orders, and issue such writs as may from time to time be deemed necessary or advisable to give proper force and effect to this decree or to effectuate the rights of the parties in the premises.

assistant: 10