Janes Island (Maryland)
Historical Light List Characteristics
| 1868 | F W. W10. Arc illuminated N. 30 E. by W'd to N. 70 E. | LHB Light List (All Coasts): 216 |
| 1870 | F W. W11. Arc illuminated N. 30 E. by W'd to N. 70 E. | LHB Light List (All Coasts): 227 |
| 1878 | LHB Light List (All Coasts): 291 | |
| 1879 | LHB Light List (All Coasts): 295 | |
| 1886 | F W. W111/2. | LHB Light List (All Coasts): 339 |
| 1888 | LHB Light List (All Coasts): 356 | |
| 1893 | LHB Light List (Atlantic): 455 | |
| 1898 | LHB Light List (Atlantic): 547 | |
| 1899 | LHB Light List (Atlantic): 561 | |
| 1905 | LHB Light List (Atlantic): 651 | |
| 1908 | LHB Light List (Atlantic): 704 | |
| 1915 | F W. W11. | USLHS Light List (Atlantic): 942 |
| 1917 | F W. W11. Obscured 196°-231°(35°). | USLHS Light List (Atlantic): 977 |
| 1920 | F WR. W11, R11. R0021/2°-016°(131/2°), W016°-196°(180°), W231°-002°(131°). | USLHS Light List (Atlantic): 1028 |
| 1927 | F W. W11. Obscured 196°-231°(35°). | USLHS Light List (Atlantic): 1105 |
| 1931 | USLHS Light List (Atlantic): 1424 | |
| 1935 | USLHS Light List (Atlantic): 1775 | |
| 1943 | Fl WR 6s. W11, R11. fl 1. R196°-246°(50°), W246°-196°(310°). | USCG Light List (Atlantic): 2297 |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953-1955 | Fl WR 6s. W11, R7. fl 1. R196°-246°(50°), W246°-196°(310°). | USCG Light List - Vol. I-VI: 2851 |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 3341 | |
| 1961 | USCG Light List - Vol. I: 3341 | |
| 1963 | Fl WR 4s. W11, R7. fl 0.4. R196°-246°(50°), W246°-196°(310°). | |
| 1965 | ||
| 1966 | Fl WR 4s. W12, R12. R196°-246°(50°), W246°-196°(310°). | USCG Light List - Vol. I: 3669 |
| 1969-1970 | ||
| 1972 | ||
| 1973-1974 | Fl WR 4s. W8, R5. R196°-246°(50°), W246°-196°(310°). | |
| 1976 | ||
| 1978 | ||
| 1982 | Fl WR 4s. W8, R5. R015°-066°(51°), W066°-015°(309°). | |
| 1987 | Fl WR 4s. W8, R6. R015°-066°(51°), W066°-015°(309°). | USCG Light List - Vol. II: 16810 |
| 1990 | USCG Light List - Vol. II: 20910 | |
| 1991-1992 | Fl WR 4s. W8, R6. R195°-246°(51°), W246°-195°(309°). | |
| 1993-1996 | USCG Light List - Vol. II: 22815 | |
| 2004 |
Historical Light List Optics and Structures
| 1868 | 4th | N/A | 35 | Screw-pile light-house in 6 feet water. | LHB Light List (All Coasts): 216 |
| 1870 | LHB Light List (All Coasts): 227 | ||||
| 1878 | A square screw-pile light-house, with shingle roof, in 6 feet water; iron foundation, painted brown; superstructure, white; roof of lantern, red. | LHB Light List (All Coasts): 291 | |||
| 1879 | LHB Light List (All Coasts): 295 | ||||
| 1886 | 40 | White hexagonal screw-pile structure; piles and roof, brown; lantern, red. Stands in 51/2 feet water. | LHB Light List (All Coasts): 339 | ||
| 1888 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black. Stands in 51/2 feet water. | LHB Light List (All Coasts): 356 | |||
| 1893 | 38 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black. Stands in 51/2 feet at mean low water. | LHB Light List (Atlantic): 455 | ||
| 1898 | White hexagonal screw-pile structure; piles and roof, brown; lantern, black. In 51/2 feet of water. | LHB Light List (Atlantic): 547 | |||
| 1899 | LHB Light List (Atlantic): 561 | ||||
| 1905 | White, hexagonal, screw-pile structure; piles and roof, brown; lantern, black. In 51/2 feet of water. | LHB Light List (Atlantic): 651 | |||
| 1908 | White, hexagonal, screw-pile structure; brown piles and roof; black lantern. In 51/2 feet of water. | LHB Light List (Atlantic): 704 | |||
| 1915 | N/A | White; hexagonal; on brown piles. In 3/4 fathom. | USLHS Light List (Atlantic): 942 | ||
| 1917 | White, hexagonal; on brown piles. In 3/4 fathom. | USLHS Light List (Atlantic): 977 | |||
| 1920 | USLHS Light List (Atlantic): 1028 | ||||
| 1927 | USLHS Light List (Atlantic): 1105 | ||||
| 1931 | 4 o | White hexagonal on brown piles. In 4 feet. | USLHS Light List (Atlantic): 1424 | ||
| 1935 | 4 iov | USLHS Light List (Atlantic): 1775 | |||
| 1943 | 375 mm a | N/A | 37 | Skeleton steel tower and black tankhouse on cylindrical base. In 9 feet. | USCG Light List (Atlantic): 2297 |
| 1945-1947 | |||||
| 1950-1952 | 200 mm e | ||||
| 1953-1955 | N/A | Skeleton tower on cylindrical base, small black house. In 9 feet. | USCG Light List - Vol. I-VI: 2851 | ||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 3341 | ||||
| 1961 | USCG Light List - Vol. I: 3341 | ||||
| 1963 | |||||
| 1965 | |||||
| 1966 | USCG Light List - Vol. I: 3669 | ||||
| 1969-1970 | Red and white checkered diamond daymark on skeleton tower on cylindrical base, small black house. In 9 feet. | ||||
| 1972-1974 | NR on skeleton tower on cylindrical base, small black house. In 9 feet. | ||||
| 1976 | |||||
| 1978 | NR on skeleton tower on cylindrical base, small black house. In 20 feet. | ||||
| 1982 | |||||
| 1987 | NR on skeleton tower on cylindrical base, small black house. | USCG Light List - Vol. II: 16810 | |||
| 1990-1992 | NB on skeleton tower on cylindrical base, small black house. | USCG Light List - Vol. II: 20910 | |||
| 1993-1996 | USCG Light List - Vol. II: 22815 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1868 | Fog-bell struck by machinery. | None | LHB Light List (All Coasts): 216 |
| 1870 | A bell struck by machinery. | LHB Light List (All Coasts): 227 | |
| 1878 | A bell, struck by machinery, at intervals of 15 seconds. | LHB Light List (All Coasts): 291 | |
| 1879 | LHB Light List (All Coasts): 295 | ||
| 1886 | Bell struck by machinery every 15 sec. | LHB Light List (All Coasts): 339 | |
| 1888 | LHB Light List (All Coasts): 356 | ||
| 1893 | LHB Light List (Atlantic): 455 | ||
| 1898 | LHB Light List (Atlantic): 547 | ||
| 1899 | LHB Light List (Atlantic): 561 | ||
| 1905 | LHB Light List (Atlantic): 651 | ||
| 1908 | Bell struck by machinery a single blow every 15 sec. | LHB Light List (Atlantic): 704 | |
| 1915 | Bell; 1 stroke every 15 sec. | USLHS Light List (Atlantic): 942 | |
| 1917 | USLHS Light List (Atlantic): 977 | ||
| 1920 | USLHS Light List (Atlantic): 1028 | ||
| 1927 | USLHS Light List (Atlantic): 1105 | ||
| 1931 | BELL; 1 stroke every 15 sec. | USLHS Light List (Atlantic): 1424 | |
| 1935 | USLHS Light List (Atlantic): 1775 | ||
| 1943 | BELL; 1 stroke every 30 sec. (CO2). | USCG Light List (Atlantic): 2297 | |
| 1945-1947 | |||
| 1950-1952 | |||
| 1953-1955 | BELL: 1 stroke ev 30s. | USCG Light List - Vol. I-VI: 2851 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 3341 | ||
| 1961 | USCG Light List - Vol. I: 3341 | ||
| 1963 | |||
| 1965 | |||
| 1966 | HORN, diaphragm; 1 blast ev 20s (2sbl). | USCG Light List - Vol. I: 3669 | |
| 1969-1970 | HORN, diaphragm; 1 blast ev 30s (3sbl). | ||
| 1972 | |||
| 1973-1974 | HORN, 1 blast ev 30s. | ||
| 1976 | HORN: 1 blast ev 30s. | ||
| 1978 | |||
| 1982 | HORN: 1 blast ev 30s. | ||
| 1987 | HORN: 1 blast ev 30s. | USCG Light List - Vol. II: 16810 | |
| 1990-1992 | USCG Light List - Vol. II: 20910 | ||
| 1993-1996 | USCG Light List - Vol. II: 22815 | ||
| 2004 | HORN: 1 blast ev 30s. |
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1867 - Present (Current modern light location; it is assumed the original 1867 lighthouse was located near the same location.) |