ShichigahamaTimeline
| Stone Age - 10,000 BC | First Residents. |
| Jomon Period - 10,000BC - 300 BC | Jomon Tools discovered along Matsushima Bay Coasts, Shichigahama and Naruse Town. |
| Yayoi Period - 300BC - 300Ad |
Residents begin using metal tools, hunting, planting rice and depending upon the sea. Rice cultivation tools from this period were discovered in near by Tagajo. |
| Tumulus Period - 300 - 700 |
Farming and the rice crop flourish. Formal Hierarchy develops, influenced from mainland practices. Major tombs constructed. There is little in the remains of tombs or evidence of major cultivation, but evidence of tomb caves remain at Yakushido in Minatohama, Sunahama and Hanabuchihama’s Takayama. |
| JINKI 1 - 724 | Nearby Tagajo established as a government center. Takenominoto or present day Minatohama in Shichigahama becomes the major port for the area. Remains of the Government Saltworks and trade are found in Toguhama, Hanabuchihama in Shichigahama. |
| Enryaku 13 - 794 | Yakushido Shrine constructed in Minatohama. Yakushido was build to prey for the safe return of Sailors. |
| Kenkyu 3 - 1192 | Isawa establishes the region of what is now known as Shichigahama. |
| Keicho 8 - 1603 | In the 286 years between the rise and crumble of power in Sendai, Shichigahama was considered one for supporting axels of the domain. |
| Kanbun 4 - 1664 | Modifications to the Nanakita River create transportation routes through supporting Nigatake, Fukudamachi, Miyaginohara and Sendai which supports an increase in farming activity in Shichigahama. |
| Meiji 9 - 1876 | A town hall is established, recognizing the municipality of Shichigahama formed upon the merger of the 7 villages on the peninsula. |
| Meiji 20 - 1887 | A road along the perimeter of Shichigahama completed. |
| Meiji 21 - 1888 | Shobutahama Recreational Beach and residences established. |
| Meiji 22 - 1889 | Village of Shichigahama established. Pop: 4,157. Takayama retreat for foreigners opens. Canal from Kitakami River to Abukuma River opened, Seizan Canal project carried on (started in 1883). Seizan Floating Toll Bridge completed. |
| Meiji 37 - 1904 | 157 villagers go to war, 7 die and 78 injured. |
| Meiji 3 - 1906 | Shobutahama Post Office completed. |
| Meiji 41 - 1908 | First telegraph. Residences established at Hanabuchihama. |
| Taisho 2 - 1913 | Privately managed Taidai Toll Bridge Collapses, replaced by ferry. Tsunami causes 91,583 yen worth of damage. |
| Taisho 3 - 1914 | Plans and preparation started for Kimigaoka Park. |
| Taisho 4 - 1915 | Town Hall at Shobutahama established. First gas powered engines on fishing vessels. |
| Taisho 6 - 1917 | First construction under electric lights. |
| Taisho 9 - 1920 | National Census finds Shichigahama population at 6,284. Fire Department established. |
| Taisho 12 - 1923 | Parts of Shichigahama established as part of Matsushima Special Scenic Location Area. |
| Taisho 14 - 1925 | Road from Shiogama and Shobuta through Hanabuchi, Yoshida and on to Sendai reinforced as a prefectureal route. Seizan Bridge Construction started. |
| Showa 2 - 1927 | First electric lights in Town Hall. Americans visit Matsugahama Elementary School through a U.S. – Japan cooperative. |
| Showa 3 - 1928 | Shipping Signal Tower completed at Hanabuchihama. |
| Showa 4 - 1929 | Start of nori Cultivation. |
| Showa 5 - 1930 | Population: 7,441 First Bus Route. Yoshidahama Post Office established. |
| Showa 6 - 1931 | 3 boats voyage out to become the first net fishing operation for North Pacific Salmon and Trout in Japan. (Operations end in 1943) |
| Showa 8 - 1933 | Tsunami -- minor damage. |
| Showa 9 - 1934 | 33 Fishing Vessels embark on fishing operations in the North Pacific. |
| Showa 10 - 1935 | Population: 8,463 |
| Showa 12 - 1937 | Tsunami destroys 100 meters of Matsugahama breakwater. |
| Showa 13 - 1938 | First telephones. |
| Showa 14 - 1939 | 36 from Shichigahama die in Sino-Japanese war. Population: 9,279. |
| Showa 16 - 1941 | 336 from Shichigahama die in War of the Pacific. |
| Showa 22 - 1947 | Population: 10,594 |
| Showa 24 - 1949 | Medical clinic opens in Shobuta. |
| Showa 25 - 1950 | Population: 11,618 |
| Showa 27 - 1952 | Fishing cooperative and market opened in Hanabuchihama. |
| Showa 29 - 1954 | Disaster Prevention Services Support Cooperative established with Shiogama, Matsushima, Tagajo and Rifu. Dike completed at Yogaisakihama. |
| Showa 30 - 1955 | Population: 11,953 |
| Showa 32 - 1957 | First TV broadcast. Miyagi Prefecture holds talks about the amalgamation of Shichigahama, Shiogama and Rifu. |
| Showa 34 - 1959 | Shichigahama Village becomes Shichigahama Town. Town hall moves to its current location. Residences at Yogasaki established. Sendai Thermal Power Plant Completed. |
| Showa 35 - 1960 | Population: 13,054 |
| Showa 37 - 1962 | Three stories reinforced Town Hall building completed. |
| Showa 38 - 1963 | Residences established at Toguhama. Cruise boat service terminated. Yogai Land reclamation project completed. |
| Showa 39 - 1964 | Hanabuchi Lighthouse completed. A three-floor Ekiraku Elementary school completed. |
| Showa 40 - 1965 | Population: 13,332 |
| Showa 41 - 1966 | Town water system established. |
| Showa 42 - 1967 | First Town Sports Festival held. |
| Showa 43 - 1968 | School lunch center built, program implemented. Daigi site of Jomon area remains designated as a national site. |
| Showa 45 - 1970 | Shiogama Area Fire Department Association formed. Shichigahama Community Center completed. |
| Showa 46 - 1971 | Shichigahama town gym and fire station completed. |
| Showa 47 - 1972 | Direct phone service established. Shichigahama parent-child center established. |
| Showa 49 - 1974 | Matsugahama Uto zone preparation completed. Kimigaoka water tank constructed. Shichigahama Chamber of Commerce established. |
| Showa 50 - 1975 | Toyama Kindergarden opened. Move to Minatohama begins. |
| Showa 52 - 1977 | Baseball Ground completed. Preparations made to begin Shiomidai residential area. |
| Showa 53 - 1978 | General Culture Center completed. Miyagi Earthquake results in major damage to 59 buildings, one death and a cost of 230,000,000 yen to the town. Track grounds competed. |
| Showa 54 - 1979 | Shichigahama dojo and tennis courts completed. Lights completed at baseball ground. |
| Showa 57 - 1982 | Indoor pool completed. |
| Showa 60 - 1985 | Population: 18,106 |
| Showa 61 - 1986 | Shichigahama History Museum completed. |
| Heisei 1 - 1989 | Shichigahama 100th anniversary celebrated. Population: 19,523 |
| Heisei 2 - 1990 | First Yacht Competition opened in Shichigahama. First friendship-city delegation goes to Plymouth, Massachusetts, U.S.A. Sister city relationship formed. |
| Heisei 4 - 1992 | Population reaches 20,000. |
| Heisei 5 - 1993 | Shichigahama Kokusaimura opened. |
| Heisei 6 - 1994 | Shichigahama mission of “life long learning” declared. Indoor gateball facility completed. Town managed cemetery completed. |
| Heisei 7 - 1995 | 375th anniversary Festival of Sister town Plymouth Celebrated. Sendai International Triathlon held in Shichigahama. |
| Heisei 8 - 1996 | Bus line between Tagajo Bunka Center and Kokusaimura developed. Shichigahama original "Boyajyu" ice cream sold. |
| Heisei 9 - 1997 | Town Pool changed to Salt Water. 24-hour home-helper service opened. |
| Heisei 10 - 1998 | Aquaria Heath Club and Soccer Stadium completed. Kokusaimura receives national architecture award. |
| Heisei 11 - 1999 | The seven fishing cooperatives in Shichigahama merge. |
| Heisei 12 - 2000 | Population: 21,134 |
| Heisei 13 - 2001 | All Japan Youth Soccer Tournament held at Shichigahama Soccer Stadium. |
