Appendix 1
Non-tidal Potomac River Patents
MSA SC 5330-24-15
Statistical Analysis of Research Results Relating to Potomac River Tracts
(Last Updated February 2, 2001)

 
 

Appendix one consists of three tract lists and maps that detail survey of non-tidal Potomac River patents.

For presentation purposes, the lists and maps cover three distinct geographical sections of the non-tidal Potomac River between Washington D.C. and the Maryland / West Virginia border in Garret County Maryland.
 

Section Number
Geographical Area
Database Name
Section 1 Georgetown to the Montgomery County/Frederick County Border nontidal1
Section 2 Frederick County to Eastern Allegany County nontidal2
Section 3 Western Allegany County to Garrett County nontidal3

The maps are numbered in series based upon their geographical section and the sequence in which the maps were generated during the mapping process   (e.g. The first map in section 1 is known as Map nontidal1-1. Subsequent maps from the same section are numbered sequentially: the next map from section 1 is known as Map nontidal1-2.)

In each section, the first map provides an overview of all tracts located along the Potomac River.  Subsequent maps display tracts located along the Potomac that have at least one of the following characteristics:

  1. The survey extends to the Virginia shore of the Potomac River.
  2. The survey includes land that is an island in the Potomac River.
  3. The survey includes a portion of the land under the banks of the Potomac.
Item numbers (randomly generated during the mapping process) are displayed on the maps only for those tracts that were identified as reaching the Virginia shore, include an island in the river, and cover a portion of water and land under the water of the Potomac. See the chart below, entitled Potomac River Tracts, for a statistical analysis of the tracts meeting this criteria.  Following the chart is a list of the tracts that gives the item number, map it is located on, the Maryland State Archives document citation, and a link to the digital image of the document.

Maps

The maps are used to give the location of the tracts relevant to this report. A key is provided on each map that details the geographical area covered, the time period covered, the information on the map, and the scale.  The majority of the  maps display tract numbers, which correspond to the tract list provided below.  In areas that have a high concentration of tracts there are several maps that detail the same area but display a separate time period.

Map List:
 

Nontidal1:   Georgetown to the Montgomery County/Frederick County Border
 
  1. Map nontidal1-1

  2. Washington D.C. to the Montgomery County/ Frederick County Line 1600-2000
    Showing all tracts bordering the Potomac River
    Scale: .76 miles / inch
     
  3. Map nontidal1-2

  4. Washington D.C. to the Montgomery County/ Frederick County Line 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: .76 miles / inch
     
  5. Map nontidal1-3

  6. Washington D.C. to Below the Great Falls, Montgomery County, Maryland 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
     
  7. Map nontidal1-4

  8. Great Falls of the Potomac, Montgomery County, Maryland 1600-1830
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 500 feet / inch
     
  9. Map nontidal1-5

  10. Great Falls of the Potomac, Montgomery County, Maryland  1830-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 500 feet / inch
     
  11. Map nontidal1-6

  12. Present Day Watkins Island, Montgomery County, Maryland to .5 miles below the Montgomery County / Frederick County Line 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
     
  13. Map nontidal1-7

  14. Present Day Harrison Island, Montgomery County, Maryland to Present Day Mason Island, Montgomery County, Maryland 1600-1740
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 500 feet / inch
     
  15. Map nontidal1-8

  16. Present Day Harrison Island, Montgomery County, Maryland to Present Day Mason Island, Montgomery County, Maryland 1740-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 500 feet / inch


Nontidal2: Frederick County to Eastern Allegany County

  1. Map nontidal2-1

  2. Frederick County to Eastern Allegany County 1600-2000
    Showing all tracts bordering the Potomac River
    Scale: 1.52 miles / inch
     
  3. Map nontidal2-2

  4. Frederick County to Eastern Allegany County  1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 1.52 miles / inch
     
  5. Map nontidal2-3

  6. Frederick County to Eastern Washington County  1600-1739
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
     
  7. Map nontidal2-4

  8. Frederick County to Eastern Washington County 1740-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
     
  9. Map nontidal2-5

  10. Washington County 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
     
  11. Map nontidal2-6

  12. Big Pool to Sideling Hill, Washington County 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: 2000 feet / inch
Nontidal3: Western Allegany County to Garrett County
  1. Map nontidal3-1

  2. Western Allegany County to Garrett County, Maryland  / West Virginia Border 1600-2000
    Showing all tracts bordering the Potomac River
    Scale: 1.52 miles / inch
     
  3. Map nontidal3-2

  4. Garrett County, Maryland 1600-2000
    Showing tracts on the Potomac River that have at least one of the following characteristics:
    Tracts that are or include islands
    Tracts that extend into the river
    Tracts that reach the Virginia shore
    Scale: .76 miles / inch
Potomac River Tracts 
Non-Tidal Potomac Region Bordering 
Potomac
In the Potomac Pre-1785
To the VA Shore
1785-1862
To the VA Shore
1862-Present
To the VA 
Shore
Total Tracts to Virginia Shore Acreage of Tracts to VA Shore Islands Islands, Tracts to VA Shore,
Tracts Extending into the water
Georgetown to the Montgomery County/Frederick County
(database file: nontidal1.mbl)
127 5 2 1 6
(*see note 1 below)
697.5 ac.
(*see note 2 below)
28
(*see note 3 below)
39
(*see note 4 below)
Frederick County  to Eastern Allegany County
(database file: nontidal2.mbl)
123 1 6 1 9 1851.25 ac. 31
(*see note 5 below)
41
(*see note 6 below)
Western Allegany County to Garrett County
(database file: nontidal3.mbl)
12 0 0 4 0 4 386 ac. 0 4
(*see note 7 below)
Totals 262 13 4 13 2 19  2934.75 66  84
  1.  Of the 6 tracts reaching the Virginia shore, Mount Vernon MO 305 was corrected because it included land previously patented at the Great Falls.
  2. Acreage total does not include 143 acres from Mount Vernon MO 305.
  3. There are 28 tracts that include islands. Some tracts have more than one  island or were surveyed in parts. Figures in this column are for  tracts that have islands in their surveys.
  4. Total of 39 includes 6 tracts that reach the Virginia Shore (three of which are also islands and  included in the island count, but only counted once for statistical purposes), 5 tracts that extend into the river, and 28 tracts that include islands.
  5. There are 31 tracts that include islands. Some tracts have more than one  island or were surveyed in parts. Figures in this column are for  tracts that have islands in their surveys.
  6. Total of 41 includes 9 tracts that reach the Virginia Shore (three of which are also islands and  included in the island count, but only counted once for statistical purposes), 1 tract that extends into the river, and 31 tracts that include islands.
  7. Total of 4 includes 4 tracts that reach the Virginia Shore.


General Notes:

  • There are many more island tracts that have not been plotted because they were patented after 1862.
  • Work below Washington DC suspended in order to focus on tracts above tidewater.
  • Islands are tracked separately because their metes and bounds usually cover the area of the island exposed at low tide. The islands are not  included in figures for Tracts Bordering the Potomac, but are included  when applicable for Tracts to the Virginia Shore.
  • The remaining tracts in the database are entries that do not border River, have not been completed yet, have not been plotted with reasonable certainty, or were used to correct magnetic variations.
  • Very little work done in Garrett County to date.
  • About Tracts in the Potomac Non-tidal Potomac Tracts that extend into the Potomac
    (This list includes those tracts that extend into the Potomac but do not include islands and do not reach the Virginian shore)

    Georgetown to the Montgomery County/Frederick County Border
    Tracts that extend into the Potomac
    (database file: nontidal1.mbl)

    Frederick County  to Eastern Allegany County
    Tracts that extend into the Potomac
    (database file: nontidal2.mbl) Western Allegany County to Garrett County
    Tracts that extend into the Potomac
    (database file: nontidal3.mbl)
    None Found to date

    Non-tidal Potomac Tracts reaching the Virginia Shore

    Georgetown to the Montgomery County/Frederick County Border
    Tracts reaching the Virginia Shore
    (database file: nontidal1.mbl)

    Frederick County  to Eastern Allegany County
    Tracts reaching the Virginia Shore
    (database file: nontidal2.mbl) Western Allegany County to Garrett County
    Tracts reaching the Virginia Shore
    (database file: nontidal3.mbl) Tracts that include Islands in the Potomac
    Georgetown to the Montgomery County/Frederick County Border
    Tracts that include Islands in the Potomac
    (database file: nontidal1.mbl) Frederick County  to Eastern Allegany County
    Tracts that include Islands in the Potomac
    (database file: nontidal2.mbl) Western Allegany County to Garrett County
    Tracts that include Islands in the Potomac
    (database file: nontidal3.mbl)
    None Found to date