Present Condition of Little Jamuna River

Presented BySushanta Gupta

Course Title: Water Resource ManagementCourse No.: GEE 523

• Dinajpur District covers a part of Barind tract.

• The Barind tract, has been slightly uplifted above the central fluvial flood plain by faulting activity and lies at an elevation between 25 and 46.

• Phulbari tows is relatively flat and generally located on topographic undulations, between 0.6 and three meters higher than the surrounding agricultural fields.

• Maximum rainfall occurs in monsoon.

• 86 percent of Bangladesh is located below 30 meters above sea level.

• Barind tract lies at an elevation 25 to 46 MASL

• Surface elevation of Phulbari is 25 MASL to 32 MASL

• It enters India near Hilli at Birampur and again enters into Bangladesh through Panchbibi.

• After beginning at Nilphamari, little Jamuna flows in southern direction and passes the different upazila of Dinajpur

• From Panchbibi it takes southern direction and meets with Atrai in Naogaon and finally meets with Jamuna.

■Little Jamuna River is used as a generic name to describe the whole watercourse catchments of the Ichamoti-Jamuna, Kharkhari, Tilai and Little Jamuna River system

■ The little Jamuna River has an estimated bank full capacity of around 250 cubic meters per second and its catchment area is 600 square km

■ The multiple headwaters of the Khari Pul lie immediately south of the Barapukuria coal mine.

■ This contains waste water from the Baropukuria coal mine. The catchment of the Kharipul River is approximately 130 square km while the Nalsissa river has a catchment of approximately 150 square kilometers. The Kharipul River is hydraulically joined to the little Jamuna River via flood overflow channel immediately north northwest of the mine footprint. The upstream sections of the Nalsissa river occurs in the lower sections of this water course

250 cubic

multiple headwaters of the Khari Pul river

GEOMORPHIC FEATURE

■ a relatively sinuous low flow inset channel within a larger flood waterway, ■ point bars, ■ cut off, ■ instream bars, and some sand rippling downstream of Phulbari Township. ■ The bed and banks of the River are sandy except for some areas of Madhupur

clay outcropping between the confluence of the Tilai River and the Southern limit of Phulbari Township

WATER LEVEL & FLOW

■BWDB data for the little Jamuna River at Phulbari shows a distinct pattern of wet and dry seasons flow, with peaks generally in the month of October.

■Small changed in water levels can be associated with significant increases in flow,

PHULBARI GAUGE: WATER LEVELS

PHULBARI GAUGE: FLOW

FLOW COMPARISON

FLOOD

■The large scale rainfall system over India and the Himalayas, which feed the Padma, Jamuna and Meghna rivers and significantly influence flood events in other parts of Bangladesh, are not a significant factor in flooding of the study area.

REASONS■ Rivers within the study area originate locally on al alluvial platform

of RL +25 meters to 32 meters ASL

■ The deposit is also located on relatively high ground within the Barind Tract, which minimizes backwater effects from the major river system when they flood

■ Flooding in the study area is essentially a local phenomenon.

■ Two days torrential rainfall can full the river bank and this water drains within a short time if no rainfall occurs.

Recorded flood peaks at Phulbari

During the flood it was observed that the little Jamuna River overflowed its banks at several topographical low locations but not within the Phulbari Township

Present and Past comparison

■ Once the river support the irrigation of this area but now people have to depend on ground water.

■ The depth of the river has decreased considerably compared to the past. ■ Though the river had bank full stage through out the year but now it is

progressing towards death. ■ The kharipul rivers contains the waste water from Coal mine,

Dry Period Condition

Recommendation

■ Awareness program should be taken for increasing consciousness. ■ River extraction program should be undertaken to increase the depth

of the river.

THANK YOU