Watch Hill (Rhode Island)
Historical Light List Characteristics
| 1839 | Fl W 75s. | USLHE Light List (US): 72 |
| 1849 | Fl W 75s. W16. | USLHE Light List (US): 75 |
| 1858 | F W. W14. | LHB Light List (US): 122 |
| 1860 | LHB Light List (US): 110 | |
| 1865-1866 | LHB Light List (All Coasts): 110 | |
| 1868 | LHB Light List (All Coasts): 111 | |
| 1870 | F W. W13. | LHB Light List (All Coasts): 115 |
| 1878-1879 | LHB Light List (All Coasts): 147 | |
| 1886 | LHB Light List (All Coasts): 154 | |
| 1888 | LHB Light List (All Coasts): 161 | |
| 1893 | LHB Light List (Atlantic): 175 | |
| 1898 | F W. W131/4. | LHB Light List (Atlantic): 208 |
| 1899 | LHB Light List (Atlantic): 213 | |
| 1905 | LHB Light List (Atlantic): 228 | |
| 1908 | LHB Light List (Atlantic): 243 | |
| 1915 | F W. W13. | USLHS Light List (Atlantic): 318 |
| 1917 | Alt Oc W, Fl(2) R, 15s. W13 R13. | USLHS Light List (Atlantic): 330 |
| 1920 | Alt Oc W, Fl(2) R, 15s. W13 R13. lt 10, ec 1.1, fl 0.3, ec 2.2, fl 0.3, ec 1.1. | USLHS Light List (Atlantic): 349 |
| 1927 | USLHS Light List (Atlantic): 356 | |
| 1931 | USLHS Light List (Atlantic): 409 | |
| 1935 | USLHS Light List (Atlantic): 466 | |
| 1940 | USCG Light List (Atlantic): 453 | |
| 1943 | USCG Light List (Atlantic): 585 | |
| 1945-1947 | ||
| 1950 | Alt Oc W, Fl(2) R, 15s. W13 R13. lt 10, ec 1.1, fl 0.3, ec 2.2, fl 0.3, ec 1.1. Obscured 2401/2°-2541/2°(14°). | |
| 1951-1952 | Alt Oc W, Fl(2) R, 15s. W13 R13. lt 10, ec 1.1, fl 0.3, ec 2.2, fl 0.3, ec 1.1. | |
| 1953-1955 | USCG Light List - Vol. I-VI: 585 | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 701 | |
| 1961 | USCG Light List - Vol. I: 701 | |
| 1963-1965 | ||
| 1966 | USCG Light List - Vol. I: 900 | |
| 1969-1972 | ||
| 1973-1979 | Alt Oc W, Fl(2) R, 15s. W16 R15. lt 10, ec 1.1, fl 0.3, ec 2.2, fl 0.3, ec 1.1. | |
| 1982 | ||
| 1987 | USCG Light List - Vol. I: 18635 | |
| 1990-1992 | USCG Light List - Vol. I: 18380 | |
| 1993 | USCG Light List - Vol. I: 19795 | |
| 1994-1996 | Al WR 5s. W16, R14. | |
| 2004 | AlFl WR 5s. W16, R14. fl 0.25. |
Historical Light List Optics and Structures
| 1839 | 8 Lamps / 9" Refl. | 35 | 73 | N/A | USLHE Light List (US): 72 |
| 1849 | 9 Lamps / 14" Refl. | USLHE Light List (US): 75 | |||
| 1858 | 4th | 40 | 62 | Tower attached to southeast corner or dwelling. | LHB Light List (US): 122 |
| 1860 | Tower attached to southeast corner of dwelling. | LHB Light List (US): 110 | |||
| 1865-1866 | LHB Light List (All Coasts): 110 | ||||
| 1868 | LHB Light List (All Coasts): 111 | ||||
| 1870 | Granite tower attached to the southeast corner of dwelling. Dwelling white. | LHB Light List (All Coasts): 115 | |||
| 1878-1879 | Granite tower, attached to the southeast corner of dwelling. Dwelling, white. | LHB Light List (All Coasts): 147 | |||
| 1886 | Gray-granite tower, attached to S.E. corner of white building. | LHB Light List (All Coasts): 154 | |||
| 1888 | Gray granite tower, attached to S.E. corner of white building. | LHB Light List (All Coasts): 161 | |||
| 1893 | Gray granite tower, attached to SE. corner of white building. | LHB Light List (Atlantic): 175 | |||
| 1898 | 603/4 | LHB Light List (Atlantic): 208 | |||
| 1899 | LHB Light List (Atlantic): 213 | ||||
| 1905 | Gray granite tower, attached to southeasterly corner of white building. | LHB Light List (Atlantic): 228 | |||
| 1908 | 4 iov | Gray-granite tower, attached to S'ly corner of white building. | LHB Light List (Atlantic): 243 | ||
| 1915 | N/A | 45 | 61 | Square; gray-granite tower attached to white building. | USLHS Light List (Atlantic): 318 |
| 1917 | Square, gray-granite tower attached to white building. | USLHS Light List (Atlantic): 330 | |||
| 1920 | USLHS Light List (Atlantic): 349 | ||||
| 1927 | USLHS Light List (Atlantic): 356 | ||||
| 1931 | 4 iov | USLHS Light List (Atlantic): 409 | |||
| 1935 | 4 ei | USLHS Light List (Atlantic): 466 | |||
| 1940 | 4 e | USCG Light List (Atlantic): 453 | |||
| 1943 | USCG Light List (Atlantic): 585 | ||||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 585 | |||
| 1957 | |||||
| 1959-1960 | Square, gray granite tower attached to white building. | USCG Light List - Vol. I-V: 701 | |||
| 1961 | USCG Light List - Vol. I: 701 | ||||
| 1963-1965 | |||||
| 1966 | USCG Light List - Vol. I: 900 | ||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | N/A | USCG Light List - Vol. I: 18635 | |||
| 1990-1992 | USCG Light List - Vol. I: 18380 | ||||
| 1993-1996 | USCG Light List - Vol. I: 19795 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1858 | None | None | LHB Light List (US): 122 |
| 1860 | LHB Light List (US): 110 | ||
| 1865-1866 | LHB Light List (All Coasts): 110 | ||
| 1868 | LHB Light List (All Coasts): 111 | ||
| 1870 | LHB Light List (All Coasts): 115 | ||
| 1878-1879 | LHB Light List (All Coasts): 147 | ||
| 1886 | LHB Light List (All Coasts): 154 | ||
| 1888 | LHB Light List (All Coasts): 161 | ||
| 1893 | LHB Light List (Atlantic): 175 | ||
| 1898 | LHB Light List (Atlantic): 208 | ||
| 1899 | LHB Light List (Atlantic): 213 | ||
| 1905 | LHB Light List (Atlantic): 228 | ||
| 1908 | LHB Light List (Atlantic): 243 | ||
| 1915 | 3d-cl. reed horn: blast 5 sec., silent 25 sec. | USLHS Light List (Atlantic): 318 | |
| 1917 | USLHS Light List (Atlantic): 330 | ||
| 1920 | 2d-cl. reed horn: blast 5 sec., silent 25 sec. | USLHS Light List (Atlantic): 349 | |
| 1927 | USLHS Light List (Atlantic): 356 | ||
| 1931 | OSCILLATOR, air: blast 3 sec., silent 27 sec. | USLHS Light List (Atlantic): 409 | |
| 1935 | USLHS Light List (Atlantic): 466 | ||
| 1940 | HORN, diaphragm, electric; blast 3 sec., silent 27 sec. | USCG Light List (Atlantic): 453 | |
| 1943 | USCG Light List (Atlantic): 585 | ||
| 1945 | Air horn if electric horn is disabled.. | ||
| 1946-1947 | Air horn if electric horn is disabled. | ||
| 1950-1952 | None | ||
| 1953-1955 | HORN, diaphragm: 1 blast ev 30s (3sbl). | USCG Light List - Vol. I-VI: 585 | |
| 1957 | |||
| 1959-1960 | HORN, diaphragm; 1 blast ev 30s (3sbl). | USCG Light List - Vol. I-V: 701 | |
| 1961 | USCG Light List - Vol. I: 701 | ||
| 1963-1965 | |||
| 1966 | USCG Light List - Vol. I: 900 | ||
| 1969-1972 | |||
| 1973-1975 | HORN, 1 blast ev 30s (3sbl). | ||
| 1976-1979 | HORN: 1 blast ev 30s (3sbl). | ||
| 1982 | HORN: 1 blast ev 30s (3s bl). | ||
| 1987 | HORN: 1 blast ev 30s (3s bl). | USCG Light List - Vol. I: 18635 | |
| 1990-1992 | USCG Light List - Vol. I: 18380 | ||
| 1993-1996 | USCG Light List - Vol. I: 19795 | ||
| 2004 | HORN: 1 blast ev 30s (3s bl). |
Historical Light List Other Signals
| 1927 | None | USLHS Light List (Atlantic): 356 |
| 1931 | USLHS Light List (Atlantic): 409 | |
| 1935 | USLHS Light List (Atlantic): 466 | |
| 1940 | USCG Light List (Atlantic): 453 | |
| 1943 | USCG Light List (Atlantic): 585 | |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953-1955 | USCG Light List - Vol. I-VI: 585 | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 701 | |
| 1961 | USCG Light List - Vol. I: 701 | |
| 1963-1965 | ||
| 1966 | USCG Light List - Vol. I: 900 | |
| 1969-1979 | ||
| 1982 | ||
| 1987 | RBN: 306 kHz WH (   ) V. Antenna 136 yards 021° from light. |
USCG Light List - Vol. I: 18635 |
| 1990 | RBN: 306 kHz WH ()V. Antenna 136 yards, 021° from light. |
USCG Light List - Vol. I: 18380 |
| 1991 | 306 kHz, V. WH (). Antenna 136 yards, 021° from light. |
|
| 1992 | FREQ: 306 kHz, V. WH (). Antenna 136 yards, 021° from light. |
|
| 1993-1995 | FREQ: 320 kHz. WH (). Antenna 136 yards, 021° from light. |
USCG Light List - Vol. I: 19795 |
| 1996 | None | |
| 2004 |
 |
1808 - Present (Exact location of the current 1856 lighthouse. Location of the 1856 lighthouse was farther back from the sea edge from the original 1808 lighthouse due to erosion.) |