| Mount Lowe, Mount Markham, San Gabriel Peak, Mount Disappointment, Mount Deception, Occidental Peak, Waterman Mountain, Twin Peaks | 16 April 1966 | Bob Van Allen |
| Waterman Mountain, Twin Peaks | 12 April 1969 | Dick Akawie |
| X-6837, Twin Peaks | 31 May 1971 | How Bailey |
| Twin Peaks, Waterman Mountain | 18 November 1989 | Patty Kline |
| Twin Peaks, Waterman Mountain | 18 November 1989 | Bob Hartunian |
| Twin Peaks, Triplet Rocks | 21 May 1994 | Erik Siering |
| Twin Peaks, Waterman Mountain | 4 August 1991 | Patty Kline |
| Twin Peaks and Waterman Mountain | 28 July 2001 | Karen Isaacson Leverich |
Hundred Peaks Section | HPS Climbing Archives Index | HPS Peaks List