Prominent natural factors
Coal
Coal mining is the largest industry in Dong Trieu Town, with 3.606 million tonnes of coal produced in 2015, increasing 17.2% in comparison with production amount in previous year. Coal reserves are situated mostly in the communes Hong Thai Tay, Hong Thai Dong, Hoang Que, Yen Tho, Trang Luong, Binh Khe and Mao Khe ward. The amount of feasibly extractable reserves of Dong Trieu Town is approximately above 600 million tonnes and the region is a major mining center of Quang Ninh province.
Other resources and minerals: Dong Trieu produced significant amounts of construction materials such as bricks, building stone, construction sand and clay. The clay used to produce ceramic, porcelain and tiles is distributed in the communes of Binh Duong, Viet Dan, Trang An, Yen Tho, Binh Khe, Yen Duc, Kim Son, Hoang Que. Limestone reserves are also abundant in central Hong Thai and Yen Duc communes, and are primarily used in cement production. Tan Yen limestone quarry reserves amount to 350 million m3.
Land
Dong Trieu has a beautiful landscape and the whole region is hilly and mountainous. The total natural land area of Dong Trieu Town was 39,658ha, with 69.6% (27,653 ha) agricultural land, 23.2% (9,199 ha) non-agricultural land, and 7.2% (2,870 ha) of unused land. Within agricultural land,forest land occupies the largest area of 67.2%. Next, farming land accounted for 34%. Area of unused land is 2.870 ha, which is mainly mountainous land without forest cover. According to the land use plan, Dong Trieu Town intends to increase the amount of nonagricultural land, which will be used for business, mineral activities, and tourism. To fuel this increase, existing uses of agricultural land will be reduced, in particular year-long crop land, productive forest land, and aquaculture land, as well as unused land. However, there will be a reforestation effort to increase the area of forest land by ~2000 ha, boosting both forest production and forest cover. On net, there will be a slight increase in agricultural land area, projected to increase by 21.08 ha to 27,674.08 ha in 2020.
Water
Dong Trieu Town water resources consist of the river Cam, flowing into the river Da Bac, and 44 reservoirs, in which the 03 largest lakes are Lake Khe Che, Lake Ben Chau, and Lake Trai Loc I. In addition, the town has rivers running through it, including 5 km long river Dam, 15km long river Da Vach, 3km long river Vang, while the Kinh Thay River separates Dong Trieu from Hai Duong. These rivers are not large but contribute significantly to socio-economic development. There are large reserves of groundwater in Binh Khe, Duc Chinh, Trang An, Tan Viet communes that serve as water supplies for the people of Dong Trieu. There are seven groundwater sources used for drinking water supply for Dong Trieu and Mao Khe wards, Duc Chinh, Hong Phong, Hung Dao, Xuan Son, Yen Tho and Kim Son wards with a total capacity of 9,188 m3/day. Dong Trieu's 44 reservoirs contain water reserves of about 500 billion m3, of which about 24 lakes are used for water supply for production and people's daily lives.
Two main processing facilities provide clean water for households, concentrated in Dong Trieu and Mao Khe. In the town of Dong Trieu, water supply is extracted from 5 wells producing a total capacity of 4,288m3/day. This water supplies Dong Trieu regional center, Duc Chinh, Hong Phong, Hung Dao and Xuan Son communes.
In the Mao Khe areas, water supply is extracted from 1 well that produce a total capacity of 4,000m3/day. This water supplies the Mao Khe ward and Yen Tho commune, as well as the Kim Son industrial cluster.
Forests
From 2013 to 2015, forest area and forest cover increased from 17.415,56ha to 19.892,5ha.