Sam Ngao is the northernmost district (Amphoe

Amphoe

An amphoe is the second level administrative subdivision of Thailand. Usually translated as district, amphoe make up the provinces, and are analogous to a county seat...

) of Tak Province

Tak Province

Tak is one of the northern provinces of Thailand. Neighboring provinces are Mae Hong Son, Chiang Mai, Lamphun, Lampang, Sukhothai, Kamphaeng Phet, Nakhon Sawan, Uthai Thani and Kanchanaburi...

, northern Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

.

History

The minor district (King Amphoe) was established in 1930 as a subordinate of Ban Tak

Amphoe Ban Tak

Ban Tak is a district in the northern part of Tak Province, northern Thailand.-History:The area of Ban Tak is the old location of Mueang Tak. It was an ancient frontier city, located on the west bank of the Ping River in Ban Tha Phra That, Tambon Ko Taphao...

 district. Originally named Tha Pui (ท่าปุย), it was renamed to Sam Ngao in 1939. It was upgraded to a full district in 1958.

Geography

Neighboring districts are (south from clockwise): Ban Tak

Amphoe Ban Tak

Ban Tak is a district in the northern part of Tak Province, northern Thailand.-History:The area of Ban Tak is the old location of Mueang Tak. It was an ancient frontier city, located on the west bank of the Ping River in Ban Tha Phra That, Tambon Ko Taphao...

, Mae Ramat

Amphoe Mae Ramat

Mae Ramat is a district in the northwestern part of Tak Province, northern Thailand.-History:The area of Mae Ramat was occupied by Karen people for 100 years. Many people from northern provinces of Thailand moved to establish a new village there. Later the village grew bigger and became the...

 of Tak Province, Omkoi

Amphoe Omkoi

Omkoi is the southwesternmost district of Chiang Mai Province in northern Thailand.-Geography:Neighboring districts are Hot, Doi Tao of Chiang Mai Province, Sam Ngao, Mae Ramat Tha Song Yang of Tak Province and Sop Moei of Mae Hong Son Province.-History:The minor district was established on...

, Doi Tao

Amphoe Doi Tao

Doi Tao is a district in the southern part of Chiang Mai Province in northern Thailand.-Geography:Neighboring districts are Om Koi, Hot of Chiang Mai Province, Li of Lamphun Province and Sam Ngao of Tak Province....

 of Chiang Mai Province

Chiang Mai Province

Chiang Mai is the second-largest province of Thailand, located in the north of the country. Neighboring provinces are Chiang Rai, Lampang, Lamphun, Tak, and Mae Hong Son. In the north it borders Shan State of Burma...

, Thung Hua Chang

Amphoe Thung Hua Chang

Thung Hua Chang is a district of Lamphun Province, northern Thailand.-History:The minor district Thung Hua Chang was created on February 1 1987, when three tambon were split off from Li district...

 of Lamphun Province

Lamphun Province

Lamphun is one of the northern provinces of Thailand. Neighboring provinces are Chiang Mai, Lampang and Tak.-Geography:Lamphun is located in the river valley of the Ping River, surrounded by mountain chains....

, Mae Phrik

Amphoe Mae Phrik

Mae Phrik is a district in the southern part of Lampang Province, northern Thailand.-Geography:Neighboring districts are : Thoen of Lampang Province, Sam Ngao of Tak Province and Li of Lamphun Province.-History:...

 and Thoen

Amphoe Thoen

Thoen is a district in the southern part of Lampang Province, northern Thailand.-Geography:Neighboring districts are : Soem Ngam, Sop Prap of Lampang Province, Wang Chin of Phrae Province, Si Satchanalai, Thung Saliam, Ban Dan Lan Hoi of Sukhothai Province, Ban Tak, Sam Ngao of Tak Province, Mae...

 of Lampang Province

Lampang Province

Lampang is one of the northern provinces of Thailand. Neighboring provinces are Chiang Rai, Phayao, Phrae, Sukhothai, Tak, Lamphun and Chiang Mai. The old name of Lampang is Khelang Nakhon.-Geography:...

.

The important water resources of the district are the Ping

Ping River

The Ping River , along with the Nan River, is one of the two main contributaries of Chao Phraya River. It originates at Doi Chiang Dao in Chiang Dao district, Chiang Mai Province. After passing Chiang Mai town, it flows though the provinces Lamphun, Tak, and Kamphaeng Phet...

 and Wang River

Wang River

The Wang River is a river in northern Thailand.-Geography:The Wang River is altogether 335nsnp;km long. Its waters flow from north to south. One of the principal settlements along the river is Lampang, which is situated on the north bank of a curve in the river. From Lampang, the river extends...

. The Bhumipol reservoir is an artificial lake of the Ping river, both for flood control as well as for generating electric power.

Administration

The district is subdivided into 6 subdistricts (tambon

Tambon

Tambon is a local government unit in Thailand. Below district and province , they form the third administrative subdivision level. As of the 2009 there are 7255 tambon, not including the 169 khwaeng of Bangkok, which are set at the same administrative level, thus every district contains 8-10 tambon...

), which are further subdivided into 43 villages (muban

Muban

Muban is the lowest administrative subdivision of Thailand. Usually translated as village, they are the subdivision of tambon. As of 2008, there are 74944 administrative villages in Thailand. As of the 1990 census, the average village consisted of 144 households or 746 persons.A muban does not...

). Sam Ngao is a subdistrict municipality (thesaban tambon) which covers parts of the tambon Sam Ngao. There are further 6 Tambon administrative organizations (TAO).

No.	Name	Thai	Inh. Population A population is all the organisms that both belong to the same group or species and live in the same geographical area. The area that is used to define a sexual population is such that inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals...
1.	Sam Ngao	สามเงา	9,241
2.	Wang Man	วังหมัน	4,522
3.	Yokkrabat	ยกกระบัตร	8,200
4.	Yan Ri	ย่านรี	3,294
5.	Ban Na	บ้านนา	2,161
6.	Wang Chan	วังจันทร์	5,065