Colorado Well Finder › Wells by county › Grand County › Granby
Buying land or a home near Granby means dealing with mountain bedrock, variable well depths, and incomplete reporting in the Colorado DWR records. Within 5 miles of Granby, the records contain 2,324 permitted wells, with 1,479 marked constructed. Of those, 1,603 report total depth and 703 report pump yield.
The local pattern is useful for planning, but it is not a guarantee for one parcel. Most permits identify an unnamed or fractured-bedrock aquifer, and nearby wells can still produce very different results. Use this information to set expectations, compare a driller’s proposal, and investigate the specific lot before closing.
Figures are computed from Colorado Division of Water Resources permit records for permitted wells within 5 miles of Granby. Not every permit reports every field; each statistic uses the wells that report it.
| Depth statistic | Feet |
|---|---|
| 25th percentile | 110 |
| Median | 201 |
| 75th percentile | 350 |
| 90th percentile | 547 |
| Deepest on record | 1,202 |
| Aquifer named on permits | Wells |
|---|---|
| unnamed / fractured-bedrock aquifer | 2,291 |
| Dakota | 8 |
| Alluvial | 8 |
| Yield statistic | gpm |
|---|---|
| 25th percentile | 5.0 |
| Median | 8.0 |
| 75th percentile | 10.5 |
| Median depth to water | 75 ft |
| Median water level by decade | Depth to water |
|---|---|
| 2000s | 70 ft |
| 2010s | 60 ft |
| 2020s | 80 ft |
The median reported well depth near Granby is 201 feet. The middle half runs from 110 to 350 feet, so a bid near the median is not unusual, but a parcel near the upper end of that range may require substantially more drilling. The 90th percentile is 547 feet, and the deepest record reaches 1,202 feet.
Depths reflect the fractured granite and gneiss typical of this mountain setting. The records show 21% of wells under 100 feet, 44% from 100 to 300 feet, 26% from 300 to 600 feet, and 8% at 600 feet or more. A driller should evaluate the lot, access, geology, and neighboring completions rather than price the job from the median alone.
Among the 703 wells reporting a pump yield, the median is 8.0 gallons per minute. The middle half reports 5.0 to 10.5 gallons per minute. That is generally a workable range for a household, but the well’s storage, pressure system, fixtures, and any local use restrictions still matter.
Reported production is concentrated between 5 and 15 gallons per minute, covering 72% of the yield records. Another 19% are from 1 to 5 gallons per minute, 8% report more than 15 gallons per minute, and 1% report under 1 gallon per minute. Low-yield and dry-hole risk is not zero in fractured rock. Ask for the well construction report and pumping information, not just a verbal production estimate.
The median static water level is 75 feet below the ground surface, with the middle half between 25 and 100 feet. That number describes the water level when measured, not the total depth of the well. It also should not be treated as the guaranteed depth to water on a new lot.
By measurement decade, the median was 70 feet below surface in the 2000s, 60 feet in the 2010s, and 80 feet in the 2020s. This series does not show a steady, decade-by-decade decline. The most recent median is deeper than the prior decade, but the records cover only 211 reported static water levels, so parcel-specific measurements and seasonal conditions deserve more weight.
Permit activity spans older and newer construction. The records list 13 permits from the 1950s, 45 from the 1960s, 366 from the 1970s, 309 from the 1980s, 503 from the 1990s, 500 from the 2000s, 178 from the 2010s, and 198 from the 2020s. The newest permit year is 2026.
The most active drillers named in these records are Mcpherson Drilling Company, also listed with Benny Don Mcpherson, with 456 records; Virginia Drilling Co. Inc., also listed with Otis C. Shuck, with 139; and James Drilling, also listed with Jordan K. Keaton, with 138. These are permit-record counts, not a recommendation or proof of current availability. Confirm licensing, insurance, references, and the proposed scope directly.
The local cost model assumes fractured mountain bedrock and a drilling rate of $65 to $100 per foot. At the 201-foot median depth, the drilled hole works out to about $13,100 to $20,100. That is only the drilling portion and should not be confused with the complete water system.
A finished well with pump, pressure tank, trenching, and electrical is modeled at about $19,100 to $32,100 at that median depth. A deeper hole can move beyond that range, particularly where access is difficult or the design changes. Get the depth allowance, casing and grout details, pump equipment, testing, trenching, electrical work, and treatment assumptions in writing. Compare proposals on the same scope rather than on dollars per foot alone.
Most permits in this area identify an unnamed or fractured-bedrock aquifer: 2,291 wells carry that description. Fractured rock can produce water unevenly over short distances, so a productive neighboring well does not guarantee the same result. Confirm the target well location, access for a rig, setbacks, casing, grout, and the contractor’s plan if the first hole is low-yield or dry.
Environmental due diligence also matters. Within about 10 miles are 6 PFAS sampling or contamination sites, 33 historic mine features, and 2 EPA Superfund or cleanup sites. Those mapped sites do not establish contamination at your property. Test existing water, review available environmental records, and plan septic and building locations together. A Colorado DWR permit, water-quality testing, and any required septic approval are separate parts of the project.
Before closing, pull the DWR records for the parcel and nearby wells, especially in Granby, Tabernash, and Hot Sulphur Springs. Compare reported depths, yields, static levels, construction details, and dates. Have a local driller review the access route and geology before relying on a budget based only on the 201-foot median.
Most permits are for domestic or household use, accounting for 87% of the use mix. A buyer should confirm the actual permit status and allowed use for the property. If the lot is in an over-appropriated basin, an augmentation plan may be required for the proposed use. For a new build, coordinate the well location, septic system, driveway, electrical trench, and home pad early. Keep a contingency for deeper drilling, testing, storage, and treatment if the field results require it.
| Decade permitted | Wells |
|---|---|
| 1950s | 13 |
| 1960s | 45 |
| 1970s | 366 |
| 1980s | 309 |
| 1990s | 503 |
| 2000s | 500 |
| 2010s | 178 |
| 2020s | 198 |
| Most active drillers on record | Wells |
|---|---|
| Mcpherson Drilling Company (Mcpherson, Benny Don) | 456 |
| Virginia Drilling Co. Inc. (Shuck, Otis C) | 139 |
| James Drilling (Keaton, Jordan K.) | 138 |
How this is built: the median permitted depth here times the per-foot range for this ground, plus the normal system costs. A lot at the 75th-percentile depth (350 ft) would run roughly $28,750–$47,000. See the full Colorado well cost guide.
Counts come from EPA, USGS and state datasets layered on the Colorado Well Finder map. A count is not a verdict on any one well; it tells you what to test for.
The numbers above are the area average. Your lot is one point on the map. Search the address to see the real depth, yield and aquifer of each permitted well around it.
Map wells near GranbyTri-Lakes Contracting is a licensed Colorado contractor serving Granby and Grand County for access driveways, site development, new-build septic systems, and custom homes. Coordinate the site work early so the well, septic, utilities, and building pad fit the lot.
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A listing photo can't tell you whether a lot is a dream or a money pit. Two parcels near Granby can carry the same asking price while one needs an $80,000 driveway and a $45,000 engineered septic the other doesn't. The well numbers on this page are the start of that answer. A Tri-Lakes Site Feasibility Report is the rest of it: a licensed general contractor, excavator and septic installer reads the parcel the way we would if we were about to build on it, and puts the real cost in writing before your money is committed.
Spend a little to know. Or gamble a lot to guess. Realtors sell the view and inspectors look at houses that already exist. We're the people who'd build it, so we catch what quietly turns a "great deal" into a budget disaster: bad access, buried rock, steep grade, soil that won't pass for a normal septic, water that's a fortune to reach. And if the lot is good, you've already got a builder ready to do the work, driveway to drywall.
Under contract, comparing parcels, or a realtor with a rural listing whose buyers keep asking "what will it cost to build here?" This is the due-diligence step almost everyone skips, and the one that saves the most.
Driveway, site work, septic or a build near Granby. Licensed GC, excavator and septic installer.
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The median reported well depth within 5 miles of Granby is 201 feet. The middle half runs from 110 to 350 feet. About 44% of recorded depths are between 100 and 300 feet, while 8% are 600 feet or deeper. Fractured granite and gneiss make the depth at one parcel different from the depth at a nearby property.
The local drilling model uses $65 to $100 per foot in fractured mountain bedrock. At the 201-foot median depth, the drilled hole is estimated at $13,100 to $20,100. A finished system with pump, tank, trenching, and electrical is estimated at $19,100 to $32,100. A deeper hole, difficult access, or added equipment can change the final proposal.
Among 703 wells with reported pump yields, the median is 8.0 gallons per minute and the middle half is 5.0 to 10.5 gallons per minute. Records show 72% producing between 5 and 15 gallons per minute. Another 19% are between 1 and 5 gallons per minute, so a buyer should review the actual well test rather than assume the median.
Safety cannot be determined from depth or yield. The area has 6 mapped PFAS sampling or contamination sites, 33 historic mine features, and 2 EPA Superfund or cleanup sites within about 10 miles. Those locations do not prove a property is contaminated. Test the well water through an appropriate laboratory and review local environmental records before drinking it.
The median reported static water level was 70 feet below surface in the 2000s, 60 feet in the 2010s, and 80 feet in the 2020s. That does not show a steady decline by decade, although the latest median is deeper than the prior decade. Only 211 records report static water levels, so a nearby measurement and seasonal testing are more useful for a specific property.
All wells in Grand County — county-wide depth, yield and cost figures.
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