INTRODUCTION and MAP 1. SLOPE of LAND SURFACE and the Quadrangle Atlas No
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Maryland Geological Survey HYDROGEOLOGIC ATLAS NEW WINDSOR QUADRANGLE CARROLL COUNTY, MARYLAND Prepared in cooperation with the United States Geological Survey INTRODUCTION AND MAP 1. SLOPE OF LAND SURFACE and the Quadrangle Atlas No. 11 Commissioners of Carroll County PLEASANT VALLEY 0 7 Ml. 7rm 77o07'3Cr EMMITSBURG (JUNC US. 15) 14 Ml m ' TANEYTOVJN 4.5 Ml.l\^ T^NEYTOWN 5 39o37'30" 39o3730" HYDROGEOLOGY SLOPE OF LAND SURFACE by Edmond G. Otton and others Prepared by • Photo Science, Inc. INTRODUCTION EXPLANATION 650 300 This atlas describes the hydrology and geology of the New Windsor TV^-minute quadrangle in central Carroll County, Maryland. It is for the use Four slope-area categories are shown on this map by three types of of County, State, and Federal officials as well as planners, engineers, health shading and by the absence of shading for the terrain category having a slope officers, and the public as a guide to water supply, waste disposal, and of 0 to 5, percent. Terrain having the maximum slope (greater than 25 land-use planning and design. The quadrangle includes an area of 57 square percent) currently (1978) exceeds the maximum land slope permitted for miles lying entirely in Carroll County, except for 0.2 square mile in the the installation of domestic sewage-disposal systems (septic tanks) by the southwest corner, which is in Frederick County. The town of Westminster Carroll County Health Department. Intermediate terrain categories are lies partly within the quadrangle, and the town of New Windsor lies entirely useful in planning certain construction activities involving local roads within it. The area is traversed by Maryland Routes 97, 31, 27, and 407. and drains. The Western Maryland RR crosses the quadrangle from west to east. Land use in the area is largely agricultural and woodland, although considerable This map was prepared using topographic-contour negatives by a suburban development has taken place in the past decade, especially along process developed by the U.S. Geological Survey, Topographic Division. The the main roads southwest of Westminster. The area receives an average of process uses a semiautomated photomechanical process, which translates the 42 inches of rainfall annually, characteristic of the humid Piedmont region distance between adjacent contours into slope data. The slope zones on the of central Maryland. West of Maryland Route 27, the quadrangle is drained map are unedited. Proximity of the same contour or absence of adjacent chiefly by tributaries of the Monocacy River. East of Route 27, the drainage contours may produce false slope information at small tops and depressions, is mainly by tributaries of the Patapsco River. Topography is undulating to on cuts and fills, in saddles and drains, along shores of open water, and at the hilly, and the maximum relief is about 480 feet. The Wakefield Valley, in edges of the map. the center of the quadrangle, is a significant feature, characterized by gently sloping to flat terrain and rich, loamy soils. L- J \s -•%1* 77W ^ m m r D Q H m n H < m 0) H "D H 0 m X D 0 39*30' U) LIMITATIONS OF MAPS m > D I All the maps of this Atlas represent some degree of judgment and m interpretation of available data. The boundaries depicted on maps are not < to be construed as being final, nor is the information shown intended to m supplant a detailed site evaluation by a specialist in these fields. u 0 tn H 0 z m a o m 0 REFERENCES ti -a 5 Cleaves, E. T., Edwards, Jonathan, Jr., and Glaser, J. D. (compilers and z LOCATION IN CARROLL COUNTY editors), 1968, Geologic map of Maryland: Maryland Geol. Survey. H 0 Fisher, G. W., 1978, Geologic map of the New Windsor quadrangle: U.S. z Geol. Survey Map 1-1037. H I Meyer, Gerald, 1958, The ground-water resources in The water resources of (0 Carroll and Frederick Counties: Maryland Dept. Geology, Mines and r HYDROLOGY Z Water Res. 1/ Bull. 22, p. 1-228. m The source of all ground water in the area is local precipitation. Nutter, L. J., 1974, Well yields in the bedrock aquifers of Maryland: > Z Hydrologic studies show that 8 to 10 inches of the 42 inches of annual Maryland Geol. Survey Inf. Circ. 16, 24 p. D precipitation becomes recharge to the aquifers. Ground water occurs chiefly Nutter, L. J., and Otton, E. G., 1969, Ground-water occurrence in the I C in the pores and voids in the weathered rock (saprolite) and in the fractures Maryland Piedmont: Maryland Geol. Survey Rept. Inv. 10, 56 p. CD and joints in the unweathered rock. The top of the zone of saturation in Otton and others, 1979, Hydrogeologic atlas of Westminster quadrangle, H 0 these rocks is the water-table, or the potentiometric surface. The water-table Carroll County, Maryland: Maryland Geol. Survey Atlas No. 9, 5 maps. > Otton and others, 1979, Hydrogeologic Atlas of the Winfield quadrangle, D fluctuates seasonally in response to changing patterns and amounts of I precipitation and to changes in evapotranspiration. Maryland: Maryland Geol. Survey Atlas No. 10, 5 maps. m Stose, A. J., and Stose, G. W., 1944, Geology of the Hanover-York district m Ground-water supplies are obtained from drilled wells and from a few Pennsylvania: U.S. Geol. Survey Prof. Paper 204, 84 p. ^ springs. Some of the Piedmont aquifers are more productive than others; Stose, A. J., and Stose, G. W., 1946, Geology of Carroll and Frederick for example, average well yields in marble are substantially higher than those Counties in The physical features of Carroll and Frederick Counties: in schist or phyllite. In some localities, for example along Parrs Ridge, Maryland Dept. Geology, Mines and Water Res. 1/ p. 11-128. adequate domestic ground-water supplies are not everywhere available, due University of Maryland, Maryland State Roads Commission, U.S. Bureau of to the scarcity of fractures in the rocks. Public Roads, 1963, Engineering soil map of Carroll County (1 sheet). U.S. Department of Agriculture, Soil Conservation Service, 1969, Soil The yield of individual wells depends on their topographic position survey, Carroll County, Maryland 92 pages, 55 photomaps, 1 index. (valley wells are most productive), the nature and thickness of the weathered U.S. Department of Agriculture, Soil Conservation Service, 1971, Soils and zone, and the extent and degree of fracturing of the rocks penetrated by the septic tanks: 12 p. well. Most of the water is of a suitable chemical quality for domestic use, U.S. Department of Agriculture, 1971, Soils and septic tanks: 12 p. although ground water from the areas underlain by marble may be hard. U.S. Public Health Service, 1967, Manual of septic-tank practice: U.S. The flow of springs is variable-some of the smaller springs dry up during Public Health Service Pub. 526, 92 p. dry periods. GEOLOGY U The name of this agency was changed to the Maryland Geological Survey The New Windsor quadrangle is in the Piedmont physiographic in June 1964. province of Maryland. It is underlain chiefly by structurally complex, metamorphosed sedimentary rocks of early Paleozoic age. Two small areas, totalling about 1 square mile, along the north border of the quadrangle are underlain by sediments of Triassic age, chiefly shale, siltstone, and sandstone. A major structural feature, the Wakefield Valley syncline, occupies the center of the quadrangle (Fisher, 1978). Marble in the CONVERSION FACTORS Wakefield valley near the town of Medford provides the material for an In this Atlas, figures for measurements are given in U.S. customary important quarry operation in Carroll County. units. The following table contains the factors for converting customary units to metric (System International or SI) units: The crystalline phyllite, schist, and marble are commonly mantled by weathered rock (saprolite), which grades upward into true soil. The U.S. Customary Multiply For thickness of the saprolite is variable, ranging from zero to 100 feet or more; Unit Symbol by Metric Unit Symbol Tl the saprolite may be relatively thin along some of the ridges of quartzitic 5 phyllite and substantially thicker in the marble valleys. inch (in) 25.4 millimeter (mm) I 7^ D (^ D foot (ft) 0.3048 meter (m) ^ MAPS INCLUDED IN THE ATLAS X 1.609 kilometer (km) „ mile (mi) n Wl > Map 1. Slope of land surface, by Photo Science, Inc. «7S"»" I ^ o square mile (mi2) 2.590 square kilometer (km2) 3 ^ Map 2. Depth to the water table, by Edmond G. Otton. 0- U.S. gallon (gal) 3.785 liter (L) Z Map 3. Availability of ground water, by Edmond G. Otton. 5 d ^ 2 D (D U.S. gallon (gal/min) 0.06309 liter per second (L/s) P Z Map 4. Constraints on installation of septic systems, by Edmond G. per minute o Z o Otton. en C U.S. gallon [(gal/min)/ft] 0.207 liter per second [(L/s)/m] M 5 Map 5. Location of wells, springs, and test holes, by John T. Hilleary and per minute ^ < NT Edmond G. Otton. per foot m ^ CD o ^s o 39 30' n m 3 39 30' 5' i 21 ^^1.5 Ml. TO MO. 27 1322 •323 jf TAYLORSVILLE 3.6 Ml. 1324 o 77°07'30" TAYLORSVILLE 3.6 Ml 5562 / NE RIDQEVILLE (JUNC. U.S.40) 12 Ml. 77 00' I] oTl Topography from aerial photographs £>) SCALE 1:24000 by stereophotogrammetric methods > ^ Photographs taken 1943-44 (photo-revised -I I 1 I- -i i—=r GN 25% by U.S. Geological Survey 1971). 1000 2000 3000 4000 5000 6000 7000 FEET =i_ 'ZF 1 KILOMETER Prepared by Photo Science, Inc., Gaithersburg 7Vi° 133 MILSH t'19' Maryland, utilizing contour negatives furnished 23 MILS by United States Geological Survey.