R. Oberlitner Well Drilling & Repair
Ithaca, MI48847
The typical geological profile for the Ithaca, MI region consists of an alternating sequence of sand/gravel, clay, and occasional stony or boulder-bearing layers, with a deeper regional trend toward coarser or fractured sand or sandstone aquifers. Shallow wells commonly draw from sand/gravel or coarse sand below multiple clay tills.
Showing contractors within 60 miles of Ithaca. 76 results found.
A geological estimate for the Ithaca area.
Typical Well Depth
Static Water Level
Recommended Method
Analysis of well logs from the Ithaca area shows that wells typically encounter an upper zone of sand and/or clay, followed by alternating layers of fine to coarse sand, gravel, and clay at varying thicknesses. Boulder or stony layers are present but less common. At greater depths (>150 ft), sandstone formations may be encountered, functioning as high-yield aquifers. Most residential wells are completed in coarse sand, sand/gravel, or the upper part of sandstone, at depths of 60-100 ft. Shallow aquifers are found at depths where thick sand/gravel/cobble sequences underlie multiple layers of clay, with static water levels typically between 10-23 ft. The most common drilling method is rotary with mud circulation, casing to the bottom of clay and grouted with bentonite slurry.
Depth (Feet) | Formation Type | Description | Characteristics |
---|---|---|---|
0 – 2 ft | Topsoil | Topsoil or surficial organic material | Color: Brown/Dark Hardness: Soft |
2 – 12 ft | Clay | Brown clay, sometimes silty or sandy; acts as a confining layer | Color: Brown Hardness: Firm |
12 – 22 ft | Clay | Gray clay (occasionally with stones or pebbles); continuous confining/till layer | Color: Gray Hardness: Hard |
22 – 32 ft | Sand & Gravel | Fine to coarse sand with some gravel; may include cobbles/boulders locally, moderate aquifer potential | Color: Yellow to Tan Hardness: Moderate |
32 – 62 ft | Clay | Gray or brown dense clay, may include scattered stones; regionally extensive till, often slightly compacted | Color: Gray/Brown Hardness: Firm |
62 – 80 ft | Clay w/Stones or Boulders | Gray clay with embedded stones or boulders; locally discontinuous | Color: Gray Hardness: Hard |
80 – 100 ft | Sand, Coarse or Sand & Stones | Coarse sand with some gravel, stones, or cobbles; main local aquifer with good water yield | Color: Yellow/Gray Hardness: Loose |
100 – 130 ft | Clay | Thick, hard, blue-gray to brown clay or till; forms main lower confining layer | Color: Blue-Gray/Brown Hardness: Hard |
130 – 150 ft | Sand & Stones | Mixed sand and stones or gravel, locally present, can be water-bearing | Color: Gray/Tan Hardness: Moderate |
150 – 310 ft | Clay | Brown clay, very thick regional confining layer (only present in deep/bedrock wells) | Color: Brown Hardness: Very Hard |
310 – 335 ft | Gypsum | Massive gypsum; regional evaporite/bedrock, not always encountered (ignore if shallower aquifer tapped) | Color: White/Gray Hardness: Very Hard |
335 – 342 ft | Red Sand | Red sand, transitional to underlying bedrock aquifer | Color: Red Hardness: Loose |
342 – 483 ft | Sandstone (Red to White) | Interbedded red and white sandstone; regional bedrock aquifer for high-capacity or municipal wells | Color: Red/White Hardness: Hard |