⟁ Texas Water Well Reports field records · 2026 survey

Texas Water Well Reports › Colorado County › Rock Island (77470)

Rock Island, TX (77470): well depth, water level & drilling cost

✓ 91 TDLR SDR records · Colorado County

140 ftmedian well depth
125 ft–186 fttypical depth range
58 ftmedian static water level
56 gpmmedian yield (86 tests)

How deep are wells in Rock Island (77470), Texas?

The median drilled well depth in Rock Island (77470) is 140 ft, based on 91 wells with recorded depths in the state TDLR SDR database. Half fall between 125 ft and 186 ft; 90% are shallower than 265 ft.

How much does it cost to drill a well in Rock Island (77470)?

Applying published per-foot rates to the local median depth of 132 ft: drilling and casing alone typically runs $3,300–$8,580; a complete system including pump, pressure tank, and hookup typically runs $7,920–$13,200. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Rock Island (77470)?

The median static water level is 58 ft below ground surface (middle half of wells: 49 ft–71 ft), from 90 measurements.

Pull every recorded well near a Rock Island (77470) address — $19

Drilled depth distribution

0–50 ft 0 50–100 ft 0 100–150 ft 57 150–200 ft 15 200–300 ft 12 300–400 ft 6 400–600 ft 1 600+ ft 0
Looking at a specific property in Rock Island (77470)?

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Part of Colorado County well records.

Method: medians computed from TDLR SDR records (water-supply wells only (domestic, irrigation, stock, public supply, industrial) — monitoring, environmental borings, test holes, injection and geothermal excluded; depths 0–5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.