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OFR 99–0557: Delaware, Maryland, and Washington D.C., Digitized Aeromagnetic Projects
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No
Name
Flown By
Date Flown
Spacing
Dir
Altitude
LnMi
Datum
Publication
0046 Delaware Fall Zone USGS 04/1953-06/1953 0.5 mi. N-S 1000 AG
1282
 Tot.field, arb.datum GP-363
0070 Worcester-Wicomico USGS 03/1945 1 mi. E-W 1000 AG
900
 Tot.field, arb.datum OM-46
0309 Montgomery County1 USGS 04/1958 0.25 mi. E-W 500 AG
1418
 Tot.field, arb.datum GP-394-397
0350 Ft. Belvoir ARMS USGS 02/1960-05/1960 1 mi. E-W 500 AG
8724
 Tot.field, arb.datum GP-923,77-709
0351 Montgomery Co. Extension2 USGS 03/1960-05/1960 0.5 mi. E-W 500 AG
340
 Tot.field, arb.datum GP-398-399,74-208
0368 Pittsburgh ARMS USGS 06/1960-09/1960 1 mi. N-S 500 AG
15000
 Tot.field, arb.datum GP-445
0390 Sugar Loaf USGS 03/1961-04/1961 0.25 mi. E-W 500 AG
1400
 Tot.field, arb.datum 74-205-208
0411 Montgomery Reflight3 USGS 05/1960 0.5 mi. E-W 500 AG
90
 Tot.field, arb.datum GP-394-397
0510 Harford County USGS 11/1962 0.5 mi. NW-SE 500 AG
1300
 Tot.field, arb.datum GP-482
0531 Baltimore Gneiss4 USGS 01/1964-02/1964 0.5 mi. E-W 500 AG
2055
 Tot.field, arb.datum GP-613,74-205,207
0639 Maryland Coop '68 USGS 05/1968 0.5 mi. E-W 400 AG
2453
 Tot.field, arb.datum GP-755,756
0684 Maryland Coop '705 USGS 06/1970 1 mi. E-W 3500 B
3330
 Tot.field, arb.datum GP-842
0705 Maryland Coop '71 USGS 03/1971-04/1971 1 mi. E-W 1200 B
2837
 Tot.field, arb.datum GP-898-900
3023A Southeast Maryland LKB 09/1972-11/1972 1 mi. E-W 1200 B
1400
 IGRF65 73-296
3023B Northern Maryland LKB 09/1972-11/1972 0.5 mi. E-W 500 AG
1690
 IGRF65 73-291

1 Project 0309 is fully merged with parts of Project 0351 and 0531.
2 See Projects 0309 and 0350. Project 0351 is fully merged with Project 0309 and 0350.
3 See Project 0309. Project 0411 is fully merged with 0309.
4 Project 0531 includes parts of Project 0309 and 0510 and is fully merged with parts of Project 0350.
5 Project 0684 is incomplete. The area east of about 77°45' is superseded by Project 3023B.

Click on the individual survey numbers that are of interest to download ASCII XYZ file to your hard drive or click on the name to view a point plot.

Description of Table

No.: Internal USGS identification number
Name: Internal project name (not always the name used in publication title)
Flown By: Company or government agency who flew the original survey
Spacing and Dir.: Primary flight-line spacing and primary flight-line direction
Altitude: Primary flight altitude in feet; B = barometric elevation, AG = above ground draped over topography
LnMi.: Approximate total of line miles flown for this survey
Datum: Indicates if a regional field was removed and, if it could be determined, the base value removed. Total field = no regional was removed. Arb. (arbitrary) datum = the base value removed was not stated on the map.
Publication: Brief publication reference*. USGS publications are listed as: Open-File reports = xx-yyyy where xx is the publication year, Bulletins and Professional Papers = B-yyyy or P-yyyy, Geophysical Maps = GP-yyyy, Miscellaneous Field Studies Maps = MF-yyyy, Miscellaneous Investigations Maps = I-yyyy, Unpub = unpublished data, refers to all or part of the original project area.

*For more complete references see: Hill, P.L., 1991, Bibliographies and location maps of publications on aeromagnetic and aeroradiometric surveys for the states east of the Mississippi River north of the Ohio and Potomac rivers, U.S. Geological Survey Open-File Report 91-0370-C, 104 p. 

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Further information about aeromagnetic data from the state of Kentucky can be obtained by contacting Pat Hill, (303) 236-1343, email (pathill@usgs.gov), or Bob Kucks, (303) 236-1405, email (rkucks@usgs.gov), or click the button below.
 

Map of Composite 
and Merged 
Aeromagnetic Data for
Maryland, Delaware,
and Washington D.C.
Data Format 
and 
Digitizing Technique
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This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial Standards. Use of brand names is for descriptive purposes and does not constitute endorsement by the U.S. Geological Survey.

Last modified 9/14/1999.

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