Jaldhaka Upazila ( Nilphamari district) with an of area 303.52 sq km, is surrounded by Dimla upazila on the north, Kishoreaganj, (Nilphamari) upazila on the south, Hatibandha and Kaliganj (Lalmonirhat) upazilas on the east, Nilphamari Sadar and Domer upazilas on the west. 

Main rivers are Tista , Jamuneshwari and Ghagat.

Jaldhaka (Town) consists of four mouzas. It has an area of 11.66 sq km. The town has a population of 14976, male 52.56%, female 47.44%. The density of population is1284 per sq km. Literacy rate among the town people is 27%. The town has two dakbungalows and one stadium.

Administration The Jaldhaka thana was established in 1911 and was turned into an upazila in 1983. The upazila consists of 12 union parishads, 69 mouzas and 69 villages. 

Archaeological heritage and relics Garh (fort) of Raja Dharmapal and remnants of his Rajbari (eighteenth century), remnants of the Rajbari of Raja Harishchandra (ninth century).

Historical events About 150 Bangalies were killed by Pak Army on 27 April 1971 at Kaliganj.

Marks of the War of Liberation Mass grave: 2, Kaliganj and at the back yard of Jaldhaka High School.

Population 233885; male 51.5%, female 48.5%; Muslim 78.10%; Hindu 21.65% and others 0.25%. 

Religious institutions Mosque 317, temple 25, tomb 2 and sacred place 1.

Literacy and educational institutions Average literacy 18.4%; male 26.5%, female 9.8%. 

Educational institution: college 5, high school 36, madrasa 22, government primary school 85, non-government primary school 108, technical educational institution 1. 

Noted educational institutions: Jaldhaka Pilot High School (1930), Jaldhaka Model Government Primary School (1940).Locally published newspapers and periodicals Weekly Jalkatha; Weekly Jaltaranga (extinct).

Cultural organisations Club 19, cinema hall 4, theatre group 2, theatre stage 1, women's organisation 64, literary society 1 and playground 45.

Main occupations Agriculture 47.03%, agricultural labourer 34.43%, commerce 6.16%, wage labourer 3.69%, service 2.44% and others 6.25%.

Land use Total land under cultivation 23079.72 hectares, fallow land 5261.03 hectares; single crop 23.03%, double crop 67.67% and treble crop land 9.30%; land under irrigation 74%.

Land control Among the peasants 39.48% are landless, 56.45% small, 3.40% intermediate and 0.67% rich; cultivable land per head 0.8 hectare. 

Value of land The market value of the land of the first grade is Tk 6500 per .01 hectare.

Main crops Paddy, jute, wheat, potato, corn, onion, garlic, chilli, ginger, tobacco. Extinct and nearly extinct crops Indigo, linseed, sesame, demsi, china, barley, kaun, sweet potato, arahar and karpas cotton. 

Main fruits Jackfruit, mango, black berry, banana and litchi. Fisheries, dairies, poultries Dairy 50, poultry 38, nursery 4. 

Communication facilities Roads: pucca 67 km, semi pucca 20 km and mud road 500 km. 

Traditional transportPalanquin (extinct), horse carriage and bullock cart (nearly extinct), boat. 

Manufactories Rice mill 7, flour mill 1, ice factory 1, cold storage 2, welding 15 and saw mill 8. 

Cottage industries Weaving 15, bamboo work 260, wood work 155, potters 43, goldsmith 15, blacksmith 37; cocoon produced by women labour. 

Main hats, bazars and fairs Hats and bazars are 28, most noted of which are Jaldhaka, Mirganj and Kaimari Hat; fairs- Tatua Mela and Balagram Chandihati Mela. 

Main exports Tobacco, ginger, corn, chilli and garlic. 

NGO activities Operationally important NGOs are BRAC, ASA, CARE, RDRS, JSKS, Come to World, Danish Bangladesh, Jaldhaka Samaj Kalyan Sangstha, Leprosy Mission, etc. 

Health centres Upazila health complex 1, family planning centre 10, satellite clinic 3, leprosy treatment centre 1.