Cedar City

Geothermal Drilling and Subsurface Heat Flow in Iron County

Exploring temperature gradient holes and measuring heat beneath the surface
Cedar City Insider Staff

Cedar City Insider Staff

Aug 20, 2026

30 Comments

Geothermal drilling is taking center stage in Cedar City, with local and regional researchers aiming to unlock the mysteries of heat lurking below the surface.

 

Recently, the BLM Cedar City Field Office moved forward on a significant project, granting the green light for up to ten temperature gradient holes in the Lund North area of Iron County.

 

This decision grants a formal go-ahead while also assigning a categorical exclusion, signalling the agency’s confidence that the work won’t cause major environmental disruptions.

 

The move comes at a time when energy concerns are mounting and communities across Utah are on the lookout for sustainable options that can meet future demands.

 

The project, led by the Nevada Bureau of Mines and Geology and supported by the Department of Energy’s wide-reaching INGENIOUS program, brings together cross-state collaboration with participation from the U.S. Geological Survey and Utah Geological Survey.

 

Such cooperation is more than bureaucratic footwork—it’s a sign of just how complex and crucial geothermal research has become for the Mountain West.

 

Temperature gradient holes are not deep production wells but rather slim boreholes bored into the earth to map how temperature changes the farther down you go.

 

By measuring subsurface heat flow, the research group hopes to flag parts of the northern Escalante Valley where the earth’s warmth could one day be tapped for renewable power.

 

This kind of fieldwork doesn’t just serve scientists—it also brings the local real estate and business community to attention, since a geothermal discovery could kickstart economic shifts in northern Iron County.

 

According to recent reports, the interest in geothermal potential comes as property values and development inquiries are rising in the area, hinting at a growing anticipation for what may come after the research is complete.

 

BLM’s role is pivotal, with the agency managing vast public and subsurface lands in the western U.S.

 

Its stewardship ensures that any mineral or geothermal exploration is balanced with environmental care and community interests.

 

The categorical exclusion granted to this project means it moves forward without a lengthy environmental review, as the impact is expected to be minimal for these particular temperature gradient holes.

 

Yet, the potential implications could be huge if results show robust geothermal activity.

 

Local officials and residents alike will watch closely as scientists unpack the region’s subsurface secrets, eager to see if the heat beneath Cedar City can play a transformative role in Utah’s energy story.

30 Comments

Join the conversation

  • F
    frank_lund_area· Aug 24, 9:43 AM

    I live close to the Lund North area and honestly had no idea this was happening until now

  • HC
    Heidi Callahan· Aug 23, 8:53 AM

    My brother in law works in geothermal up in Nevada so I know this kind of research takes patience but it pays off

  • SA
    Scott Allred· Aug 23, 6:57 AM

    Ten test holes and then what years of more studies before anything actually happens

  • V
    virginia_m· Aug 23, 6:54 AM

    More jobs and renewable energy in Iron County sounds good to me

  • EP
    Ed Parrish· Aug 23, 6:44 AM

    BLM managing subsurface rights is something a lot of people around here forget about until something like this comes up

  • RS
    Rachel Summers· Aug 22, 7:06 PM

    If this leads to real geothermal power it could keep energy costs down for a lot of local families

  • K
    Kris_84720· Aug 22, 6:28 PM

    Slim boreholes mapped for heat flow sounds pretty low impact to me so the exclusion makes sense

  • DH
    Dave Holt· Aug 22, 3:11 PM

    Would love to see Cedar City become a model for geothermal energy in the west

  • TO
    Tammy Orr· Aug 22, 2:51 PM

    Northern Escalante Valley is beautiful country hope they are careful out there

  • PG
    Phil Gundersen· Aug 22, 2:46 PM

    The USGS and Utah Geological Survey both being involved gives me confidence this is being done right

    • LV
      Loretta Vance· Aug 23, 11:01 PM

      Phil GundersenAgreed, having federal and state agencies working together on this rather than just one outfit doing it solo does seem like a good sign. Less chance of corners being cut.

  • A
    amy_st_george· Aug 22, 8:03 AM

    Does anyone know how long it takes to get results from these boreholes

    • DF
      Debra Fife· Aug 22, 6:27 PM

      amy_st_georgeFrom what I've read, temperature gradient holes are pretty quick compared to full production wells. Could be weeks to get initial readings, but interpreting the data and publishing findings takes longer obviously.

  • BC
    Bob Christensen· Aug 22, 6:40 AM

    This is exactly the kind of clean energy investment we need in southern Utah

  • LM
    Lisa Munson· Aug 21, 3:06 AM

    Categorical exclusion means less red tape which is fine for small test holes but I hope full production gets a real review

  • N
    nathan_cedar· Aug 21, 2:59 AM

    Been hearing about geothermal potential in this region for years glad someone is finally drilling to find out

    • CH
      Cindy Halverson· Aug 21, 1:22 PM

      nathan_cedarRight there with you. There has been a lot of talk for a long time. Nice to see actual equipment going in the ground instead of just more studies and reports.

  • BL
    Brenda Leavitt· Aug 21, 2:29 AM

    Property values going up before they even know if theres anything there seems premature to me

  • GD
    Greg D.· Aug 21, 1:44 AM

    The fact that DOE is funding this through INGENIOUS tells me they are pretty serious about what might be down there

    • PN
      Paul Nestor· Aug 21, 6:41 AM

      Greg D.That program has been funding exploratory work all over the west from what I can tell. Cedar City is in good company. Fingers crossed the geology here cooperates.

  • CW
    Carla Whitmore· Aug 21, 1:02 AM

    Love that Nevada and Utah are working together on this instead of competing over resources

  • T
    tom_ironco· Aug 20, 11:49 PM

    Ten holes is not a lot but its a start I guess

    • I
      ironco_mike· Aug 22, 6:25 AM

      tom_ironcoYeah but keep in mind these are just exploratory holes to map the heat flow. If results look good they could follow up with a lot more. Ten is probably enough to get a solid picture of the area.

  • SB
    SueAnn Beckstead· Aug 20, 11:19 PM

    Geothermal energy makes so much sense for this part of Utah honestly

    • TR
      Tammy Jo Reese· Aug 21, 6:43 AM

      SueAnn BecksteadExactly, we already have the heat, we just need to figure out how much. Beats hauling in fuel from somewhere else or depending on the grid for everything.

  • MF
    Mike Fossen· Aug 20, 11:12 PM

    My family has land out near the Escalante Valley and we have been curious about this for a while now

  • DK
    Donna K.· Aug 20, 8:58 PM

    Hope the BLM actually keeps an eye on things and doesnt just rubber stamp everything that comes after this

  • J
    jared_cc_utah· Aug 20, 6:50 PM

    Temperature gradient holes sound way less dramatic than I was imagining

  • PM
    Paula Mehring· Aug 20, 5:59 PM

    Always good to see Cedar City getting attention for something other than the Shakespeare Festival

  • RT
    Randy T.· Aug 20, 5:12 PM

    This could be huge for Iron County if they actually find something down there

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