HD Mountains Roadless Area Profile

At a Glance: The HD Mountains (named for a 19th-century cattle brand) offer the last, best opportunity to preserve the undeveloped foothills of the San Juan Mountains in southwest Colorado. This approximately 40,000-acre roadless area on the San Juan National Forest contains many of the last remaining stands of unlogged, 300-year-old ancient ponderosa pine forests in the Southern Rockies. Ignacio Creek is perhaps the most pristine, low-elevation watershed in the entire San Juans. The HDs are located southeast of Bayfield, south of Highway 160 and Yellowjacket Pass.

Threats: The gas industry initially proposed to drill 57 coalbed methane wells and construct 38 miles of new roads within the boundaries of the HD Mountains inventoried roadless area. New roads and wells were planned for essentially every ridgeline and every valley, including up the bottom of Ignacio Canyon and down the very spine of the HD Mountains themselves.  The Forest Services 2007 drilling decisions significantly reduced the number of authorized wells and roads. It places the heart of the roadless area (Ignacio Creek) off-limits to coalbed methane drilling because of concerns about landslide hazards, slope stability, erosion, and watershed impacts, although this restriction could be lifted at some future date if industry demonstrates an ability to construct roads and well pads without impacts. The decision leaves the entire Ignacio Creek watershed undeveloped for the time being, and but still allows for several miles of new roads south along the spine of the HDs and as many as 30 wells. The changes reduced the impact to the roadless area from 13,000 acres down to 5,000 acres (out of 27,000 acres the USFS considers roadless).

The old-growth ponderosas offer some appeal in terms of timber management, and portions of Ignacio Creek are included within the suitable timber base. However, topography limits utility of the area for timber management. In addition, the rarity of old-growth ponderosa pine in the region argues against timber management.

Adoption Duties for the HD Mountains Roadless Area Include (but not limited to):

  • Engage is the management planning process for the San Juan Public Lands, advocating that the HD Mountains be proposed for wilderness designation and not be an opportunity area for new motorized route creation (and further that existing motorized routes are not appropriate);
  • Engage in the travel management process, which will determine specific routes that will be legal motorized and non-motorized routes for years to come;
  • Participate in the HD Mountains Coalition to continue active opposition to plans for new gas wells in the roadless area;
  • Get to know the area, monitoring any key routes where there are resource issues. Submit information gathered to the Forest Service.
  • Lead a hike or take your friends there so more people are connected to the place and interesting in protecting it.


HD Mountains Area Details

Download the HD Mountains Roadless Area map [pdf]

watch a 10-minute video on YouTube

Description: The HD Mountains is a 39,172-acre roadless area centered around Ignacio Creek. The HD’s appearance from a distance is deceptive, inviting an impression of low rolling hills. Instead, streams incise deep and rugged valleys whose drier slopes are choked with Gambel’s oak and other dense shrubs, and whose wetter slopes are covered with stands of ponderosa pine, Douglas fir, aspen and white fir. The area offers prime habitat for turkeys, black bear, goshawk, and Mexican spotted owl. The area’s rugged topography has kept it free of extraneous roads and associated development such as logging and intensive grazing. Some spur roads penetrate the lower ends of valleys on the area’s periphery, such as Goose Creek and Turkey Creek, but the entire length of Ignacio Creek on the national forest is free of roads. One vehicle route extends north from the radio towers (FDR 756) and is proposed for closure and rehabilitation. Otherwise, the area is entirely free of roads and vehicle ways. Several range fences cross the area, and small stockponds can be found in the lower, open draws on the area’s periphery.

The rugged terrain and absence of trails results in outstanding opportunities for solitude. Primitive recreational opportunities are abundant and exceedingly high quality. The remote canyons of the HD Mountains require highly developed backcountry skills.

The HD Mountains in general, and Ignacio Canyon in particular, harbor some of the finest stands of old-growth ponderosa pine left in the San Juans. Numerous stands of old-growth ponderosa line Ignacio Canyon for over two miles. These trees are well over 250 years of age, with many exceeding three feet in diameter. The ponderosas’ cork-like bark glows red in late afternoon sunlight. Lush undergrowth fills the riparian zone below the ponderosas’ canopy. The trees are generally ramrod-straight and free of blemishes, indicating an extremely high-quality genetic pool. The San Juan National Forest’s old-growth inventory identifies several significant stands of ponderosa pine with old-growth scores greater than 40 located within the roadless area. The old-growth stands of Ignacio Canyon have been identified as a potential RNA.

At the lowest elevations, the HD’s merge into more open grasslands and parks with more widely scattered ponderosas and substantial stands of pinyon-juniper. This ponderosa/pinyon-juniper ecosystem is completely absent within designated wilderness on the San Juan NF.

The HD Mountains contain numerous diverse micro-ecological habitats surrounding springs and riparian areas, often including substantial stands of blue spruce.

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