Figure 1

Location map of the study area"

Table 1

Data used for the study and analysis"

Figure 2

Showing the temporal river course with location of cross-sections and study reaches"

Figure 3

Temporal changes of river width at various cross-sections"

Figure 4

Temporal change of the river length from 1968 to 2017"

Figure 5

Temporal measurement of meander geometry near the Patuli and Dampal bends"

Figure 6

The temporal changes of meander geometry near the Purbasthali bend"

Figure 7

The temporal changes of meander geometry near the Patuli and Dampal bends"

Figure 8

Temporal measurement of radius of curvature near the Patuli bend"

Figure 9

Temporal measurement of radius of curvature near the Dampal bends"

Figure 10

The temporal changes of radius of curvature and bend tightness ratio near the Patuli bend"

Table 2

Radius of curvature near the Patuli bend"

Table 3

Radius of curvature near the Dampal bend"

Figure 11

The temporal changes of radius of curvature and bend tightness ratio near the Dampal bend"

Figure 12

The temporal changes of radius of curvature and bend tightness ratio near the Purbasthali bend"

Figure 13

Temporal change of sinuosity index values of Bhagirathi River"

Figure 14

Reach wise temporal change of sinuosity index values from 1968 to 2017"

Figure 15

The reach wise change of channel length and sinuosity index values from 1968 to 2017"

Figure 16

Temporal change of braiding index of Bhagirathi River"

Figure 17

Reach wise temporal change of braiding index"

Figure 18

Historical river course of Bhagirathi River since 1779 to 2017"

Figure 19

Measurement of bank line shifting at different section lines from 1968 to 2017"

Figure 20

Actual shifting of left and right bank during 1968-2017"

Figure 21

Measurement of channel center line shifting at different section lines from 1968 to 2017"

Figure 22

Actual shifting of river centerline during 1968 to 2017"

Figure 23

The cross-section wise centerline shifting rate (m/year) during the entire time period of study (1968-2017)"

Figure 24

The future position of channel centerline of Bhagirathi in 2030 at selected cross-sections. The maximum shifting of centerline was recorded in 2030, at cross-section KK1 near the Gopipur (551 m, towards left side), while the minimum at cross-section CC1 near the Balidanga Char (146 m, towards left side). Whereas at cross-sections HH1 near the Uday Chandrapur (146 m, towards left side), BB1 near the Rajnagar (184 m, towards right side), II1 near the Jaganathpur and Chandanpur (279 m, towards left side) a moderate shifting trend of channel centerline was recorded."

Table 4

Cross-sections wise channel centerline shifting prediction using linear regression method, (-) value indicates the shifting to the left side and (+) value indicates the shifting to the right side. Table values represents in m."

Figure 25

The meander loops of Bhagirathi River near Patuli, Dampal and Kanksal showing the potentiality of cutoff by broken red line"