South Fork well records

South Fork, Colorado Well Depth, Yield, and Cost

Colorado Well FinderWells by countyRio Grande County › South Fork

South Fork sits near Alpine and Gerrard in Rio Grande County, where well records show a wide range of drilling conditions. Among permitted wells within 5 miles, the median total depth is 60 feet, but the middle half runs from 44 to 202 feet. That spread matters when comparing a drilling estimate to nearby records.

Most permits are for domestic or household use. The records also point to two different water settings: many wells identify an unnamed or fractured-bedrock aquifer, while others draw from the unconfined San Luis Valley aquifer. Use these numbers as a planning guide, not as a guarantee for a particular lot.

1,952wells in DWR permit records
60 ftmedian well depth
44–202 ftmiddle half of well depths
13.0 gpmmedian pump yield
30 ftmedian depth to water
2026newest permit on record

Figures are computed from Colorado Division of Water Resources permit records for permitted wells within 5 miles of South Fork. Not every permit reports every field; each statistic uses the wells that report it.

How deep are wells around South Fork?

63% under 100 ft20% 100–300 ft14% 300–600 ft3% 600+ ft
Depth statisticFeet
25th percentile44
Median60
75th percentile202
90th percentile400
Deepest on record1,600
Aquifer named on permitsWells
unnamed / fractured-bedrock aquifer1,737
Unconfined San Luis Vall119
Unconfined San Luis Valley Aquifer77

How much water do wells make near South Fork?

2% under 1 gpm7% 1–5 gpm45% 5–15 gpm46% 15+ gpm
Yield statisticgpm
25th percentile10.0
Median13.0
75th percentile15.0
Median depth to water30 ft
Median water level by decadeDepth to water
2000s28 ft
2010s26 ft
2020s30 ft

How deep are wells around South Fork?

South Fork wells have a 60-foot median reported depth. The middle half of wells falls between 44 and 202 feet, so a bid near the shallow end may fit some sites while another lot can require substantially more drilling. The 90th-percentile depth is 400 feet, and the deepest record reaches 1,600 feet.

About 63% of wells are under 100 feet, while 20% are 100 to 300 feet. Another 14% fall between 300 and 600 feet, and 3% are deeper than 600 feet. For a buyer, the nearby well records are more useful than a countywide rule. Ground conditions, exact location, and the aquifer encountered can change the depth quickly, particularly where fractured bedrock is involved.

What water yield can a South Fork well make?

Reported well yields are generally favorable, but the records are incomplete: 549 wells report a pump yield. The median reported yield is 13.0 gallons per minute, with the middle half between 10.0 and 15.0 gallons per minute. About 46% of reported wells produce 15 or more gallons per minute, and 45% produce between 5 and 15 gallons per minute.

Low-yield wells still occur. The records show 7% between 1 and 5 gallons per minute and 2% under 1 gallon per minute. A result under 1 gallon per minute can limit household recovery and storage needs, even if the well is usable. Ask for the well test, production rate, pump setting, and storage arrangement rather than relying only on a neighbor's result.

What does the water table show near South Fork?

Static water level means the depth from the ground surface to the water when the well is not actively pumping. Among 159 records that report this measurement, the median is 30 feet, with the middle half between 12 and 86 feet. That is useful for estimating pumping conditions, but it is not the same as well depth or guaranteed drawdown during use.

The decade medians do not show a clear long-term decline in these records. Measurements were 28 feet below ground surface in the 2000s, 26 feet in the 2010s, and 30 feet in the 2020s. Those figures come from different wells and measurement dates, so they should not replace a current measurement at the property under contract.

South Fork permit history and local drillers

Colorado DWR records list 1,952 permitted wells within 5 miles of South Fork, with 1,391 recorded as constructed. Permit activity was strongest in the 1990s, with 461 permits, followed by 426 in the 2000s. The records include 180 permits in the 2020s, and the newest permit year is 2026.

The most active drillers in this local record are Valley Pump Company (Self, Clinton L.), with 373 wells; American Drilling Service (Dewberry, Bradford W.), with 239; and Irrigation Engineering & Supp. (Burk, Coy), with 107. These names help identify local history, but they do not guarantee availability, current licensing status, or suitability for a new site.

What does a new well cost near South Fork?

The cost model for South Fork assumes mixed sedimentary and alluvial ground. A typical drilling rate is $50 to $75 per foot. At the 60-foot median depth, the drilled hole works out to about $3,000 to $4,500.

A finished well is more than the drilled hole. Including the pump, tank, trenching, and electrical, the model estimates about $9,000 to $16,500 at the median depth. A deeper hole, difficult access, casing or grout requirements, and site-specific electrical or trenching work can move the actual bid. Get the estimate in writing and confirm which items are included, especially pump equipment, testing, permits, and connection to the house.

South Fork risks to check before building

Yield is the main uncertainty shown in the records. Most reported wells produce at least 5 gallons per minute, but 2% are under 1 gallon per minute and 7% are between 1 and 5 gallons per minute. Dry holes and poor production are possible, particularly where a site depends on a narrow fracture rather than a consistent water-bearing layer. A driller cannot promise that one nearby result will repeat on your lot.

There are 2 mapped PFAS sampling or contamination sites within about 10 miles. No historic mine features and no EPA Superfund or cleanup sites are mapped in that area. Test existing water before purchase and plan for a new-well water test after construction. Confirm septic setbacks, replacement-area needs, access for drilling equipment, and the legal well use with Colorado DWR before finalizing a building plan.

Buying or building on a South Fork lot

Start by pulling the DWR permit and construction records for the property and nearby wells. Compare reported depths, yields, static levels, aquifer names, and completion details, giving extra attention to Alpine, Gerrard, and the area immediately around the lot. A cluster of shallow wells can support a different expectation than an isolated deep or fractured-bedrock well.

Most local permits are for domestic or household use, but the allowed use of a particular permit controls what you can do. Exempt household-use wells are subject to Colorado rules, including the 35-gallon-per-minute pumping limit. In an over-appropriated basin, an augmentation plan may be required for some uses. Before closing, have a qualified well professional review the records, test the existing water, inspect the pump system, and price access, septic, and trenching together with the house site.

Well permits by decade near South Fork

Decade permittedWells
1950s5
1960s19
1970s181
1980s229
1990s461
2000s426
2010s190
2020s180
Most active drillers on recordWells
Valley Pump Company (Self, Clinton L.)373
American Drilling Service (Dewberry, Bradford W.)239
Irrigation Engineering & Supp. (Burk, Coy)107

What a new well costs in South Fork, CO

Estimated cost of a new well · South Fork, CO · median depth 60 ft
State & county well permit DWR application + county fee
$100–$400
Drilling, casing & grouting 60 ft × $50–$75/ft in mixed sedimentary and alluvial ground
$3,000–$4,500
Pump, pressure tank & install scales with depth
$3,000–$8,000
Trenching, water line, electrical, water test
$2,100–$8,400
Typical finished total
$9,000–$16,500

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 (202 ft) would run roughly $16,100–$27,150. See the full Colorado well cost guide.

Environmental sites mapped within about 10 miles

2PFAS sampling / contamination sites
0historic mine features
0EPA Superfund & cleanup sites

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.

See every well near a specific address in South Fork

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 South Fork
Building or improving land near South Fork?

Tri-Lakes Contracting

Tri-Lakes Contracting is a licensed Colorado contractor serving South Fork and the surrounding area with access driveways, site development, new-build septic systems, and custom homes. Coordinate the well site with the driveway, septic layout, utilities, and house pad before construction begins.

Licensed Colorado custom home builder · licensed driveway & excavation contractor · licensed septic installer

Buying land near South Fork? Know what it costs to build before you buy the dirt.

A listing photo can't tell you whether a lot is a dream or a money pit. Two parcels near South Fork 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.

What the wrong lot can cost you · the things a listing never mentions
Long or steep driveway & access
$25k–$80k+
Rock excavation & extra earthwork
$15k–$60k+
Engineered / advanced septic instead of conventional
+$20k–$40k
Water & long utility runs
$10k–$50k+
A feasibility report
from $99

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.

Tell us about your project

Driveway, site work, septic or a build near South Fork. Licensed GC, excavator and septic installer.

Got it. Tri-Lakes will get back to you shortly.

Something went wrong sending that. Email kyle@trilakes.co instead.

Common questions about wells in South Fork

How deep are wells in South Fork, Colorado?

The median reported well depth near South Fork is 60 feet. The middle half runs from 44 to 202 feet, while the 90th-percentile depth is 400 feet. About 63% of recorded wells are under 100 feet, but the deepest record reaches 1,600 feet. Nearby well records are the best guide for a specific lot.

What does it cost to drill a well in South Fork?

The local cost model uses $50 to $75 per foot in mixed sedimentary and alluvial ground. At the 60-foot median depth, the drilled hole is about $3,000 to $4,500. A finished well with pump, tank, trenching, and electrical is estimated at $9,000 to $16,500. Site access and deeper drilling can change the bid.

How much water do South Fork wells produce?

Among the 549 wells reporting pump yield, the median is 13.0 gallons per minute and the middle half is 10.0 to 15.0 gallons per minute. About 2% report under 1 gallon per minute, while 46% report 15 or more. Ask for a documented well test because nearby production does not guarantee the same result.

Is well water safe in South Fork, Colorado?

The records map 2 PFAS sampling or contamination sites within about 10 miles, with no historic mine features or EPA Superfund or cleanup sites mapped. That does not establish water quality at a home. Test an existing well before buying and test a new well after construction for common contaminants and any concern identified by local conditions.

Is the water table dropping near South Fork?

The recorded decade medians do not show a clear decline: static water levels were 28 feet below ground in the 2000s, 26 feet in the 2010s, and 30 feet in the 2020s. Only 159 wells report static levels, and the measurements come from different wells, so a current site-specific measurement remains important.

Keep researching

More in Rio Grande County

All wells in Rio Grande County — county-wide depth, yield and cost figures.

Nearby areas

Driveway, septic, site work or a build near South Fork?Licensed GC, excavator & septic installer. Tell us what you need — 30 seconds.