572 THE GLACIAL LAKE AGASSIZ. 



A considerable tliickness of Cretaceous beds, apparently the Fort Benton sliales and 

 tlie Dakota sandstone, were penetrated, reaching "quartzite" at 020 feet. 



Blnnchard. — Again, probably as many as thirty artesian wells exist in Blanchar<l 

 Tillage and within a radius of 5 miles aroimd, varying in their depth from 150 to 404 

 feet. The glacial drift extends to a depth of about 200 feet, below which these wells 

 pass into Cretaceous shale and very fine-grained sandstone, probably the Dakota 

 formation. The following are two of the deepest borings : 



S. S. Blanchard, section 11, township 14."j, range Hi': Well, 375 feet: brackish 

 water, good for stock throughout the year and used in engine boilers, rises 15 i'eet 

 above the surface. 



Emerson & Wild, southwest quarter of section 11), townshij) 145, range 51, a 

 half mile north of Blanchard Village: Well, 404 feet deep; brackish water, capable 

 of rising 40 feet or more above the surface, flows at the rate of 30 gallons per minute 

 from a 2^-inch pipe. 



Norman. — On Jones & Brinker's farm, in section 13, an artesian well about .{50 

 feet deep has a strong flow of saline water. 



Mayville. — Goose Eiver Mill, owned by Gibbs & Edwards: Artesian well, .395 

 feet deep, in drift about 200 feet and below in Cretaceous shale and sandstone; water 

 brackish. 



The city artesian well, .355 feet dee]), has a strong flow of brackish water, which 

 rises 22 feet above the surface, its rate of flow being about 85 gallons per minute. 



Common wells in Mayville and its vicinity are 20 to 40 feet deep, in alluvial clayey 

 silt and till, obtaining somewhat alkaline water. The supply needed for drinking and 

 cooking is taken from the Goose Eiver, excepting by those who have rain-water 

 cisterns. 



Portland. — A boring for the railway tank is said to have gone to the depth of 

 275 feet, obtaining no artesian water. 



Minnesota and Dakota Elevator Comi)any: Well, 90 feet; water rises to 20 feet 

 below the surface; it is brackish, and forms much scale on the boilers of engines. 



The common wells in Portland arc 15 to 40 feet deej) in till, from which water 

 seeps, somewhat alkaline. 



^a«OH. —Cargill Bros.' elevator: Well, 254 feet; delta silt, about 20 feet; till, 

 inclosing occasional sand and gravel layers, about 201) feet; and sand, 34 feet. Excel 

 lent water, which makes but little scale on the engine boilers, rises to G feet below the 

 surface. 



Common wells here are ou'y 10 to 12 feet deep, obtaining plentiful and good 

 water in the fine sand of the Elk Valley delta. 



About 3 miles southwest of Hatton, in section 25, Newburg, Steele County, a 

 boring on the farm of Smith & Mills went to the depth of 553 feet, obtaining a strong 

 artesian flow, which, however, soon ceased because the lower i)art of the pipe became 



