110 ARTESIAN WELLS ON THE ATLANTIC COAST. [bull. 138. 
From Mantoloking, Waretown, and Seven Islands southward the 525- 
foot and 700-foot horizons of the Atlantic City wells have been tapped, 
and at Berkeley Arms the deeper-seated waters have been found. These 
deeper waters probably extend southward, but the wells between Berke- 
ley and Atlantic City have not reached them. The water at 790 feet at 
Mantoloking is from the beds at the base of the Lower Marl, and as 
no waters were reported between 175 and 700 feet in this well, it would 
appear that other upper Cretaceous waters do not extend under that 
portion of the county. The water at 922 feet in the deepest Avell at 
Mantoloking indicates the presence of the Matawan waters. The 
southern extension of the Mantoloking waters and of the water of lower 
horizons has not been determined. 
MONMOUTH COUNTY. 
This county appears to be underlain by several water horizons which 
furnish water to many wells at various depths. The horizon which has 
been best explored is in the basal sands of the Lower Marl bed, and 
the evidence is so satisfactory that I feel confident that there is a con- 
tinuous sheet of water in this bed in the portion of the county which 
it underlies. This comprises nearly the entire county, for the Lower 
Marl outcrop lies only about 2 miles east of the western boundary line 
for the greater part of its course. The depths to this water horizon 
are 383 feet at Asbury Park, 420 feet at Ocean Grove, 475 feet at Lake- 
wood, 135 feet at Freehold (village), 80 feet at Eed Bank, 480 feet at 
Ocean Beach, 125 feet at Seabright, 465 feet at Spring Lake, 535 feet 
at Lake Como, and 570 feet at Sea Girt, but not there utilized. The 
dip is to the southeast, at a rate of 25 feet to the mile in the north- 
eastern corner of the county and about 28 feet per mile in the Spring 
Lake region. From these data it will be very easy to calculate the 
position of the Lower Marl water horizon for any point, taking care 
in every case to make due allowance for differences in elevation above 
tide level. The water in the various wells which draw from this hori- 
zon is of excellent quality and of sufficient amount to rise, with pres- 
sure enough, considerably above tide level. The only boring of which 
I have learned that did not find water at the base of the Lower Marl 
was at Shrewsbury, but as there are successful wells in the surrounding 
region, I am of the opinion that the Shrewsbury boring passed the water 
by oversight. It was not reported at Point Pleasant. 
From 150 to 200 feet below the Lower Marl horizon there is another 
water-bearing bed in the Matawan formation, which has proved to be 
very widespread and may underlie the entire area of the county. It 
has not, however, been as thoroughly explored as the higher horizons. 
At Bed Bank it is 100 feet bow the Lower Marl, and is a large water 
puoducer. At Port Monmouth and at Matawan it is 100 feet below the 
surface; at Seabright it is 190 feet below the Lower Marl, or 258 feet 
below the surface ; at Monmouth Beach and at Monmouth Park it is 
