B-2. Little Beaver Creek. Sec. 18, T. 35 S, R. 6 E. July 21. Intermittent pools. Average width 10 feet, average length 35 feet, average depth 10 inches. Bottoms rubble, mud, and bedrock. B-3. Big Beaver Creek. Sec. 28, T. 34 S, R. 7 E. July 22. Series of small turbid pools. G-1. Grouse Creek. Sec. 5, T. 35 S, R. 5 E. May 30, September 5, and September 24. Intermittent pools in close succession. Average width 22 feet, average depth 16 inches. Water turbid on May 30 but clear in September. Bottom rubble. Steep banks. Little shade for pools. G-2. Grouse Creek. Sec. 23, T. 34 S, R. 5 E. August 29. Series of shallow intermittent pools. Average width 42 feet, average length 120 feet, average depth 15 inches. Bottom bedrock and mud. (Plate 9, fig. 2.) G-3. Grouse Creek. Sec. 6, T. 34 S, R. 6 E. July 12. Intermittent pools. Average width 20 feet, average length 65 feet, average depth 14 inches. Bottom bedrock and gravel. _Justicia americana_ L. abundant. G-4. Grouse Creek. Sec. 12, T. 33 S, R. 6 E. June 1 and September 7. Intermittent pools. Average width 15 feet, average length 100 feet, average depth 18 inches. Water turbid in June, clear in September. _Najas guadalupensis_ Spreng., and _Myriophyllum heterophyllum_ Michx. common. G-5. Grouse Creek. Sec. 19, T. 32 S, R. 7 E. July 2. Succession of riffles and pools. Water clear. Volume of flow approximately one cubic foot per second, but creek bankful after heavy rains on June 22. Average width 20 feet, average depth 18 inches. G-6. Grouse Creek. Sec. 32, T. 31 S, R. 7 E. July 8. Small intermittent pools to which cattle had access. Water turbid, bottom mud and rubble. Average width 10 feet, average depth 8 inches. Stream-bed covered with tangled growths of _Sorghum halepense_ (L.). G-7. Grouse Creek. Sec. 34, T. 30 S, R. 7 E. July 8. Stream flowing slightly. Water clear. Average width of pools 30 feet; average depth 20 inches. Bottom bedrock and gravel. _Myriophyllum heterophyllum_ Michx., _Nelumbo lutea_ (Willd.), and _Justicia americana_ L. common in shallow water. G-8. Silver Creek. Sec. 1, T. 33 S, R. 5 E. July 17. Intermittent pools. Average width 30 feet, average length 120 feet, average depth 12 inches. Water clear. G-9. Silver Creek. Sec. 4, T. 32 S, R. 6 E. July 17. Small upland brook with volume less than one-half cfs. Average width 12 feet, average depth 10 inches. Water clear, bottom mostly rubble. G-10. Crab Creek. Sec. 33, T. 33 S, R. 6 E. June 24. Intermittent pools, showing evidence of having flowed after rains on June 22. Average width 15 feet, average depth 16 inches. G-11. Crab Creek. Sec. 35, T. 33 S, R. 6 E. July 16. Small intermittent pools. Average width 13 feet, average length 55 feet, average depth 11 inches. Water clear. Bottom rubble and mud.