The natural resources are classified into two types 1. renewable and 2. non-renewable.. Renewable Natural Resources are Energy, Water, Fish, Forest etc. and Non-renewable Natural Resources are Gas & Oil, Coal, Rock, Sand etc.
Water is the renewable natural resources of Bangladesh. Bangladesh is gifted with plenty of surface and ground water resources. The surface water resources comprise water available from rivers and static water bodies as ponds, beels and haors. Surface water inflows of the country vary of a maximum of about 140,000 m3/s in August to a minimum of about 7,000 m3/s in February. Two main rivers of the country are the Brahmaputra and the Gangas account for more than 80% of stream flows. The highest flood discharge of the Ganges observed at hardinge bridge in 1987 was 76,000 m3/s and the Brahmaputra observed at Bahadurabad in 1988 was 98,600 m3/s. The minimum discharges of the rivers are 261 m3/s and 2800 m3/s, respectively. The average daily flows of the Ganga is about 10,874 m3/s which reduces to 1366 m3/s during season and increases to 3200 m3/s. The highest flows are about 44,000 m3/s which is usually received in August.
Mineral Resources reserves plus all other deposits that may eventually become available either known deposits that are not economically or technologically recoverable at present or unknown deposits that may be inferred to exist but have not yet been discovered. Geologically Bangladesh occupies a larger part of the BENGAL BASIN and the country is covered by Tertiary folded sedimentary rocks (12%) in the north, north eastern and eastern parts; uplifted Pleistocene residuum (8%) in the north western, mid northern and eastern parts; and Holocene deposits (80%) consisting of unconsolidated SAND, SILT and CL AY.
In Bangladesh not only those are natural resources but also some other elements are known as natural resources but those are the most common and significant natural resources.