Three Deductions Decide It: Garfield County, Colorado Gas Royalty Values

A Garfield County royalty check surprises people in one particular way. The gross looks reasonable; the net is a good deal smaller, and the gap is usually not the operator’s gathering and processing charges. It is Colorado’s own tax machinery, which treats producing minerals harder than almost any other property in the state, plus a regional gas price below the headline number.

If you own a royalty in the Piceance Basin and want to know what it is worth, the rock is the easy part. Three deductions do most of the work between gross and net, and they are what a buyer is really pricing.

First, what is actually under your acreage

Garfield County sits over the southern Piceance Basin, and nearly all its gas comes from the Williams Fork Formation of the Mesaverde Group. This is not a shale play. The Williams Fork is a stack of lenticular fluvial sandstones — old river channels and point bars — with porosity of roughly 5 to 12 percent and permeability of a tenth of a millidarcy or less. Classic tight gas: the sand bodies are discontinuous, and the rock will not produce without fractures plus stimulation.

The consequence is well density. Draining the section has historically required spacing on the order of 20 acres, and in places closer to 10 — which is why the Grand Valley, Parachute and Rulison fields along the Colorado River corridor are covered in vertical and directional wells rather than a few long laterals. Owners here typically hold small decimals in many wells rather than large ones in two.

The ad valorem line: Colorado assesses your gas at 87.5 percent

This catches out owners who have held minerals elsewhere. Colorado assesses producing oil and gas at 87.5 percent of the selling price of what was sold the preceding year. In the same county a home is assessed at roughly 7 percent of its value, commercial property at 25 to 27 percent. Producing minerals are the most heavily taxed property class in the state; the Division of Property Taxation’s valuation manual sets out the method.

That value is multiplied by the local mill levy, and the county is split among many taxing districts — county, municipalities, schools, fire, water and sanitation — so the levy is not uniform. The operator pays the bill and charges each owner a proportionate share, which is why an “ad valorem” line appears on your statement. It is also why Garfield County’s assessed valuation, roughly 30 percent of it oil and gas, fell more than 11 percent in 2025 as oil and gas values declined.

The severance line, and the form that arrives every March

Colorado also levies severance tax on gross income from production, at graduated rates under section 39-29-105 of the Colorado Revised Statutes: 2 percent under $25,000, 3 percent to $100,000, 4 percent to $300,000, 5 percent above.

Royalty owners are inside this system, not outside it. The producer or first purchaser withholds 1 percent of your gross income, then sends a DR 0021W statement by March 1 showing gross income, your share of ad valorem taxes, and the amount withheld. You file a DR 0021 return by April 15 unless your withholding was under $250 and the producer withheld enough to cover the liability, in which case the Department of Revenue does not require one.

The ad valorem credit is why Colorado’s effective severance tax is so much lower than its headline rate — and it is currently moving. You may credit a percentage of your share of production property taxes against severance liability: 87.5 percent through 2023, 75 percent for tax years 2024 through 2026, back to 87.5 percent in 2027, then from 2028 a different calculation entirely — 76.56 percent of gross income times the prior year’s mill levy at the well. That final change was originally set for 2026 and was delayed two years by Senate Bill 25-040, signed in May 2025 and effective that August; much online advice still carries the old date. The credit matters more than the rate: statewide, gross severance liability has averaged about 4.9 percent of gross income while the effective rate after it averaged roughly 1.6 percent, per Legislative Council Staff.

One Garfield-specific wrinkle: Colorado exempts stripper production outright. Gas wells averaging 90 Mcf per day or less — and oil wells at 15 barrels or less — pay no severance tax. In a basin full of aging verticals, many Garfield wellbores sit under that line, so one statement can carry exempt and non-exempt wells side by side. The trade-off: no ad valorem credit on exempt stripper production.

Rockies basis: the price behind the price

Piceance gas does not settle at Henry Hub. It moves through the White River Hub near Meeker — tying the basin to Colorado Interstate Gas, Northwest Pipeline, Rockies Express and others — and prices off Rockies indices such as CIG, which have persistently traded below Henry Hub, often by several tens of cents and varying by season. That basis is applied before your decimal is, so the discount lands straight in the check. A buyer prices your interest off a basis forecast, not just a gas price.

Why slow decline pushes Garfield multiples up

Here is the compensation for all of the above. A horizontal shale well loses much of its first-year rate within twelve to eighteen months. A mature Williams Fork vertical does not: it went through its steep period long ago, and what remains is a long, shallow tail.

Market convention, as summarized in the National Association of Royalty Owners valuation guide, prices producing royalties at roughly 36 to 60 times recent monthly income, and the guide warns that a simple multiple can overvalue steep-decline wells. Garfield interests generally sit in the upper half of that spread: a buyer is paying for an annuity rather than a bet.

Two cautions. The multiple applies to a normalized monthly figure, not your best month, and it is applied after the deductions above, not before. That is the most common misunderstanding we see in Colorado: an owner multiplies gross revenue by 60 and reaches a number no buyer will match, because the buyer is multiplying net.

Who operates your wells now, and why it changed

Operatorship here has turned over substantially, and owners often notice only when the name on the check stub changes. Caerus Piceance was acquired by Quantum Capital Group in August 2024, and the assets now sit with QB Energy, which kept the Parachute field office and most of the Colorado staff. Separately, TEP Rocky Mountain LLC — Terra Energy Partners, which bought WPX’s Piceance position in 2016 and operates several thousand vertical wells across Garfield and Rio Blanco — came under the control of Flywheel Energy Management in April 2025.

A change of control is neither good nor bad news in itself, but it has effects. Pay decks get reloaded, which is when latent title and address problems surface, and suspense can take longer to release. Colorado gives you a backstop under C.R.S. 34-60-118.5: first payment is due within six months after the month of first sale, then monthly — 60 days for oil, 90 for gas — with interest on late proceeds.

When selling makes sense here, and when it does not

A Garfield royalty is a reasonable thing to hold — slow-declining, long-lived and unexciting, which suits an owner who wants steady income and does not mind paperwork. Selling fits a narrower set of cases: an estate dividing among heirs who do not all want Colorado severance filings; interests too small to justify the annual return; or a preference for present value now over twenty more years of basis risk.

It usually does not if a new well or recompletion has been permitted on your unit but has not yet reached your check, because you would be selling the uplift with the base. Check the Colorado Energy and Carbon Management Commission — renamed from the COGCC in July 2023 — for recent permits on your sections first.

Working out what you actually own

Before taking any offer seriously, establish four things:

• Your net mineral acres and the units your tract falls in, from the recorded instruments rather than memory.
• Your decimal on each well, and whether the interest is a royalty, an overriding royalty, or unleased minerals.
• A normalized twelve-month net figure, after ad valorem, severance and basis.
• Which wells fall under the 90 Mcf stripper threshold, which changes tax treatment but not cash flow.

Garfield County deed records run back to 1883 and are held by the Clerk and Recorder at 109 8th Street in Glenwood Springs, with a second counter in Rifle. If your statement is hard to read, our guide to royalty statements works through the line items; for the horizontal oil side of the state, see our note on Weld County values.

With those four numbers, an offer is a short conversation. You can request a valuation on our Garfield County mineral rights page, see the other counties on our Colorado mineral rights page, or contact us directly. If your interests straddle the basin, the same Williams Fork economics govern the acreage behind our Rio Blanco County mineral rights page. If we think you should hold, we will say so.