Public concern for greater land conservation in the upper Deep Creek watershed was awakened in 1992 by an unpopular 300-acre subdivision proposed in the scenic stream basin near Running Springs. The challenge to protect Deep Creek led to the formation of a citizen group called the Deep Creek Open Space Coalition in April 1993, out of which the creation of the San Bernardino Mountains Land Trust evolved in 1995.
Total acreage: 12,000+ acres protected
Protected Parcels
| Parcel Name | Acreage | Key Features |
|---|---|---|
| Bautista Canyon | 680 | Arroyo toad habitat, riparian |
| Bluff Lake | 120 | Mountain marsh/meadow, rare plants, champion lodgepole pine |
| Broom Flat | 90 | Rare pebble plain habitat |
| Cajon Ridge North | 180 | Wildlife linkage corridor, Cosy Dell |
| Cajon Ridge South | 80 | Wildlife linkage corridor, Cleghorn Canyon |
| Carrizo Creek | 640 | Peninsular bighorn sheep habitat |
| Cosy Dell | 51 | Major wildlife underpass, I-15 crossing |
| Deep Creek Headwaters | 42 | Wild trout stream watershed |
| Eagle Canyon | 640 | SAVE THE SAINTS Project |
| Eagle Ridge / Lake Arrowhead Ridge | 80 | Mixed-coniferous forest, wildlife corridor |
| Frankish Peak | 25 | Western edge of SBNF |
| Garner Ranch | 420 | Montane meadow, deer fawning |
| Grace Valley | 183 | High-alpine meadow, youth camp |
| Grass Valley Creek | 156 | Lake Arrowhead viewshed, riparian |
| Gregory Property | 120 | Southern rubber boa, spotted owl |
| Holcomb Valley | 124 | Montane meadowlands, rare plants |
| Johnson Ranch | 352 | Peninsular bighorn sheep, gray vireo |
| Lion Peak | 640 | Pacific Crest Trail, 6,868 ft elevation |
| Lookout Mountain | 480 | Pacific Crest Trail |
| Mission Springs & PCT | 1,210 | Old growth forest, arroyo toad, yellow-legged frog |
| Palm Canyon | 642 | Red shank chaparral |
| Strawberry Peak | 50 | Southern rubber boa, wildlife corridor |
| Sugar Bush I | 313 | Peninsular juniper woodland |
| Sugarbush/Asbestos Mountain | 480 | Forest land |
| Sugar Pine Ridge | 110 | Wildlife refuge, Cosy Dell corridor |
| Tayles Hidden Ranch | 320 | Pacific Crest Trail area, scenic high country |
| Timber Gulch | 26 | Old mining claim, Cucamonga Wilderness |
| Upper Deep Creek Watershed | 723 | Wild trout, spotted owl, flying squirrel, rubber boa |
| Upper Ranch Land Exchange | 1,562 | Peninsular bighorn sheep, yellow-legged frog |
| Valley Vista | 23 | Donated land, panoramic vista |
| Wildhorse Creek | 273 | Riparian habitat, equestrian trail |
| Yaeger Mesa | 186 | SAVE THE SAINTS, historic mine |
| Yucaipa Ridge | 1,145 | Connects to San Gorgonio Wilderness |