[Map locations refer only to outlets, or to points where streams pass off the limits of the map. Altitudes refer to the same points, but are given only in the most important cases.] _Agate Creek_--E : 10--1878--U. S. G. S.--Characteristic. _Alum Creek_--H : 9--Name known prior to 1870--Characteristic. _Amethyst Greek_--E : 12--1878--U. S. G. S.--Flows from Amethyst Mountain. _Amphitheater Creek_--D : 13--1885--U. S. G. S.--From form of valley near its mouth. _Antelope Creek_--E : 10--1870--Washburn Party--Characteristic.--This name is often applied locally to a tributary of the Yellowstone just above Trout Creek. _Arnica Creek_--L : 8--1885--U. S. G. S.--Characteristic. _Aster Creek_--P : 7--1885--U. S. G. S.--Characteristic. _Astrigent Creek_--J : 12--1885--U. S. G. S.--Characteristic. _Atlantic Creek_--S : 13--1873--Jones--Flows from Two-Ocean-Pass down the Atlantic slope. _Badger Creek_--P : 13--1885--U. S. G. S.--Characteristic. _Basin Creek_--Q : 9--1885--U. S. G. S.--Characteristic. _Bear Creek_--B : 7--1863--Party of prospectors under one Austin. On the way they found fair prospects in a creek on the east side of the Yellowstone, and finding also a hairless cub, called the gulch "Bear."--Topping. _Bear Creek_--K : 11--1885--U. S. G. S.--Characteristic. _Beaver Creek_--O : 9--1885--U. S. G. S.--Characteristic. _Beaver Dam Creek_--O : 12--1871--U. S. G. S.--Characteristic. _Bechler River_--R : 1--1872--U. S. G. S.--For Gustavus R. Bechler, topographer on the Snake River Division of the Hayden Expedition of 1872. _Berry Creek_--U : 6--1885--U. S. G. S.--Characteristic. _Black-tail Deer Creek_--B : 8--Named prior to 1870--Characteristic. _Bluff Creek_--H : 10--1885--U. S. G. S.--Characteristic. _Bog Creek_--H : 10--1885--U. S. G. S.--Characteristic. _Boone Creek_--T : 1--Named prior to 1870--For Robert Withrow, an eccentric pioneer of Irish descent, who used to call himself "Daniel Boone the Second." _Bridge Creek_--K : 9--1871--U. S. G. S.--Characteristic. "At one point, soon after leaving camp, we found a most singular natural bridge of the trachyte, which gives passage to a small stream, which we called Bridge Creek."--Hayden. "Natural Bridge" is really over a branch of Bridge Creek. _Broad Creek_--F : 10--1871--Barlow--Characteristic. _Buffalo Creek_--D : 11--Prior to 1870--Naming party unknown--Characteristic. _Burnt Creek_--E : 10--1885--U. S. G. S.--Characteristic. _Cache Creek_--F : 13--1863--Prospecting party under one Austin were in camp on this stream when they were surprised by Indians, and all their stock stolen except one or two mules. Being unable to carry all their baggage from this point, they _cached_ what they could not place on the mules, or could not themselves carry. From this circumstance arose the name. _Calfee Creek_--F : 13--1880--Norris--For H. B. Calfee, a photographer of note.