Los Alamos is built on fingers of rock. The town occupies Barranca Mesa, North Mesa, Los Alamos Mesa and South Mesa on the Pajarito Plateau, at about 7,300 feet, with steep canyons such as Los Alamos Canyon and Pueblo Canyon dropping away between them. That terrain, a long snowy winter, and a history of wildfire shape the water problems that the roughly 13,200 residents of the townsite deal with.
The Restoration Job is a call-connection service with a free line, (888) 317-9980, open 24/7. We put Los Alamos and White Rock callers in touch with independent, third-party restoration providers serving Los Alamos County. Those companies do the inspection and work and set their own schedules; many often offer emergency service. We do not employ crews or perform repairs.
How the call works: when you call (888) 317-9980, The Restoration Job connects you with an independent restoration provider that serves Los Alamos. That provider inspects the damage, explains the scope and quotes the work. The Restoration Job doesn't perform restoration itself. Read our referral disclosure.
Snow, Subzero Nights and Burst Pipes on the Plateau
The townsite averages about 42 inches of snow a year, and the record low is minus 18 degrees. Cold like that finds every weak spot: pipes in exterior walls, crawl spaces, garages and rooms over unheated spaces. A split line often goes unnoticed until it thaws, and by then water may have run behind cabinets or into a lower level for hours. Snow piled on low-slope roofs can also melt during sunny afternoons and refreeze at the eaves, pushing water under roofing and into ceilings.
- Find and test your main shutoff before winter.
- Keep heat on in vacant homes and ask someone to check during cold snaps.
- Insulate or heat-trace lines in exterior walls and crawl spaces.
- After a thaw, look for stains, warped flooring and sagging drywall.
When a water damage restoration provider arrives, expect extraction, removal of materials that cannot be saved, and monitored drying.
Cerro Grande, Las Conchas and Canyon Flooding
The Cerro Grande Fire of May 2000 forced evacuation of the townsite and White Rock, destroyed more than 400 homes and caused an estimated $1 billion in damage. Burned soil sheds water quickly, and the aftermath brought flooding and erosion. The estimated peak flow in Pajarito Canyon upstream of State Road 501 reached 1,020 cubic feet per second, a record for watersheds gaged by Los Alamos National Laboratory. Crews hydroseeded about 1,600 acres, built a temporary dry dam in Pajarito Canyon, and a flood in upper Pueblo Canyon significantly damaged Diamond Drive, one of the town's main roads.
The 2011 Las Conchas Fire burned about three times as much ground but caused no property damage in Los Alamos. The lesson from both is the same: when slopes above the town burn, the following monsoon seasons carry more runoff and debris down the canyons. Homes near canyon rims or drainages should watch NWS flash flood warnings closely in those years.
What Mesa-Top Lots Mean for Drainage
On a mesa, water leaves quickly, which spares most homes from river-style flooding. The trade-off is that runoff concentrates along streets, driveways and the edges where lots slope toward a canyon. Houses with lower levels on the downhill side can take water through window wells and walkout doors during summer storms, which the National Weather Service in Albuquerque places from mid-June through late September.
Keep gutters and downspouts carrying water away from foundations, check that grading has not settled toward the house, and clear window wells of leaves before storm season. If debris-laden runoff does reach a lower level, it calls for flood cleanup rather than simple drying.
Mold Prevention After a Winter Leak
The plateau air is dry, but a burst pipe during a long cold spell can leave water in wall cavities and under floors while the house is closed up and heated, which is a good setup for mold. Growth on drywall paper, framing or carpet backing can begin within a few days if materials stay wet. Prompt extraction and documented drying do more to prevent it than anything applied afterward. Small surface spots can be cleaned; for larger areas, a provider offering mold remediation can contain and remove affected materials.
County Alerts and Planning
Los Alamos County is the smallest county by area in New Mexico, and its emergency management office plans for wildfire, winter storms and other hazards through a hazard mitigation plan and an emergency operations plan. Residents can sign up for emergency alerts through the county's Everbridge system. Flood insurance is a separate policy from homeowners coverage, and the FEMA Flood Map Service Center shows whether a given address falls inside a mapped flood zone.
Los Alamos Neighborhoods and Surrounding Towns
Calls come in from across Los Alamos, including:
- Barranca Mesa
- North Mesa
The same line also serves nearby communities such as:
- White Rock
- Española
- Pojoaque
- Santa Fe
- El Rancho
Common Questions
A pipe froze and burst while we were away from Los Alamos. Where do we start?
Close the main shutoff, switch off breakers to any wet circuits, and photograph the damage before moving anything. Then notify your insurance company so an adjuster is assigned. A restoration provider can then extract standing water, remove soaked materials and dry the structure, logging moisture readings. A plumber needs to repair the pipe, and other exposed lines should be checked too.
Does wildfire really increase flood risk in town?
It can. After the Cerro Grande Fire in 2000, runoff from burned slopes set a flow record in Pajarito Canyon and a flood in upper Pueblo Canyon damaged Diamond Drive. Burned ground absorbs less rain, so storms over a recent burn send more water, ash and debris downhill. The risk eases as vegetation recovers.
How do I get emergency alerts in Los Alamos County?
The county's emergency management page links to its Everbridge alert sign-up, which covers emergencies such as wildfire and severe winter weather. For flash flood and winter storm warnings, the National Weather Service office in Albuquerque issues forecasts and warnings for the area.