Changes in mean annual suspended sediment discharge to river deltas. DOI: https://doi.org/10.1525/elementa.269.t6
| River . | Mean Qs (Mt y–1) . | NRLP Mean Qs (Mt y–1) . | Change in Mean Qs . | Delta area (km2) . | Aggradation rate by suspended load (mm y–1) . | ||
|---|---|---|---|---|---|---|---|
. | |||||||
| Historicala . | Current . | NRLP . | |||||
| Ganga and Brahmaputra | 420 1000 | 160 830 | –39% to –75% –9% to –25% | 88100 | 5.4 | 3.6 | 2.5 |
| Mahanadi | 9.5 | 3.0 | –40% to –85% | 5000 | 1.6 | 0.2 | 0.1 |
| Godavari | 38 | 4.9 | –71% to –99% | 5200 | 7.3 | 1.6 | 0.2 |
| Krishna | 0.35 | 0.06 | –60% to –97% | 4800 | 3.0 | 0.0 | 0.0 |
| Kaveri | 0.18 | 0.23 | +7% to +43% | 8000 | 0.9 | 0.0 | 0.0 |
| River . | Mean Qs (Mt y–1) . | NRLP Mean Qs (Mt y–1) . | Change in Mean Qs . | Delta area (km2) . | Aggradation rate by suspended load (mm y–1) . | ||
|---|---|---|---|---|---|---|---|
. | |||||||
| Historicala . | Current . | NRLP . | |||||
| Ganga and Brahmaputra | 420 1000 | 160 830 | –39% to –75% –9% to –25% | 88100 | 5.4 | 3.6 | 2.5 |
| Mahanadi | 9.5 | 3.0 | –40% to –85% | 5000 | 1.6 | 0.2 | 0.1 |
| Godavari | 38 | 4.9 | –71% to –99% | 5200 | 7.3 | 1.6 | 0.2 |
| Krishna | 0.35 | 0.06 | –60% to –97% | 4800 | 3.0 | 0.0 | 0.0 |
| Kaveri | 0.18 | 0.23 | +7% to +43% | 8000 | 0.9 | 0.0 | 0.0 |
a Historical data sources are Sarker (2004) for the Ganga, and Gupta et al. (2012) for the Mahanadi, Kaveri, Godavari and Krishna. The Brahmaputra is a relatively unregulated basin and was assumed to have a historical sediment load comparable to modern values.