THE HYDROGRAPHY OF CALVERT COUNTY 



BY 



N. C. GROVER 



Calvert Count}^, situated ujjon the soutliern end of the narrow tongue 

 of land between the Chesapeake Bay and the Patuxent Eiver, has no rivers 

 of commercial importance within its boundaries. The rainfall is well dis- 

 tributed and there is consequently no irrigation, hence the hydrography 

 is relatively unimportant. 



The tides in Chesapeake Bay within the limits of this county have a 

 mean range of 1.4 feet at Cove Point and 1 foot at the northern 

 extremity of the county. The tides in the Patuxent Kiver extend beyond 

 the northern limits of the county, and the mean range is 1.2 feet at 

 Drum Point near the southern end of the count}^, and 1.5 feet at 

 Nottingham near the northern end. The rainfall at Solomons, near the 

 southern end, has averaged 39.49 inches for 12 years, while at Jewell, 

 which is just north of Calvert, in Anne Arundel County, it has averaged 

 43.93 for 9 years. 



The surface of the country is rolling and of sufficient slope to give 

 good drainage. The highest elevations near the northern end of the 

 county are about 180 feet. The streams are all necessarily short, the 

 maximum width of the county being not more than 10 miles, and 

 although the slopes of the streams are in many instances good, yet because 

 of tlieir small size, very little water-power is used. 



HALL CREEK. 



The headwaters of this stream lie in Anne Arundel County, thence 

 they flow southwesterly across Calvert County into the Patuxoct Eiver. 

 The total drainage area is 20 square miles. The basin is sandy and rolling 



