Montana WaterReport
Check a property

Montana water data · Community in Madison County

Pony: well depth, groundwater and water rights

What the public record says about water in Pony: how deep wells go, where the water table sits, what wells produce, which water rights are on file, and which documented environmental sites are nearby. Area statistics orient you; a property report analyzes the records around one specific parcel.

Updated September 2026 · Based on 245 public records from MBMG GWIC, Montana DNRC, US Census (place boundary)

Wells on record

104

77.5 per sq mi

Median well depth

77 ft

half of wells 42–135 ft

Median static water level

20 ft

92 measurements

Median tested yield

15 gpm

97 pump tests

Well depth

How deep are wells in Pony?

Of 100 wells with a recorded total depth, the median is 77 feet. Half were drilled between 42 and 135 feet; one in ten went deeper than 200 feet and one in ten found water shallower than 35 feet. Depth is set by local geology and position on the landscape, both of which change over short distances, so the spread matters as much as the median.

under 50 ft
34%
50–100 ft
25%
100–200 ft
30%
200–300 ft
8%
300–500 ft
2%
500 ft and deeper
1%

Static water level

20 ft

median depth to water at rest · half between 11 and 42 ft

The static level is how far below ground the water stands before pumping, measured by the driller at completion. It affects pump setting and operating cost, and it moves with season and with neighbouring use.

Well yield

15 gpm

median tested yield · half between 10 and 20 gpm

8% of tested wells produced under 5 gallons per minute and 42% produced 20 or more. These are short completion tests, not sustained-capacity tests; a household typically needs 3 to 5 gpm with storage.

Drilling activity

Recent well drilling in Pony

9 wells have been completed here since 2016. The newest log on file was completed June 2, 2025. Records run back to 1880.

What the wells are for

  • Domestic89
  • Irrigation6
  • Other4
  • Stockwater3
  • Monitoring2

How they were drilled

  • Rotary42
  • Cable23
  • Churn6
  • Air Rotary5

Drillers filing well logs in Pony

  • Red Tiger Drilling2 since 2016 · 2018
  • Graham Drilling Inc2 since 2016 · 2021
  • Van Dyken Drilling Inc1 since 2016 · 2024
  • Okeefe Drilling Co17 all-time · 2003
  • Potts Drilling Inc8 all-time · 1995
  • Jones3 all-time · 1969

Ranked by well logs filed with GWIC, public record only. Not an endorsement, a referral or a paid listing; we have no business relationship with these companies. Verify licensing with the Montana Board of Water Well Contractors before hiring.

Water rights

Water rights on file in Pony

Montana DNRC lists 141 water rights with a point of diversion inside this area: 101 groundwater and 40 surface water, 135 of them active. The median priority date is 1977, and the oldest claim dates to 1860.

Types of right

  • Ground Water Certificate72
  • Statement Of Claim63
  • Exempt Notice5
  • Water Reservation1

Purposes

  • Domestic60
  • Irrigation33
  • Domestic; Lawn And Garden18
  • Stock12
  • Lawn And Garden; Domestic4

DNRC basins

  • 41G141

Area totals describe the neighbourhood, not any one parcel. Montana publishes no authoritative link between a parcel and a water right; whether a right attaches to a specific property is a property-level question that our reports answer with the DNRC abstract linked.

Aquifers and geology

What wells in Pony draw from

Drillers record the aquifer a well is completed in. The units below account for the wells here that carry an aquifer assignment; the median depth beside each is for wells completed in that unit.

  • Gneiss And Schist (early Proterozoic Or Archean)22 wells · 52% · median 104 ft
  • Cenozoic Undifferentiated17 wells · 40% · median 41 ft

Aquifer assignments are the driller's, recorded at completion, and many older logs carry none. Absence of an assignment is not evidence about the geology.