1. It has been observed that the Wet land is in a polluted state with heavy siltation and occasion presence of solid waste diposition in the sanctuary areas.
2. Due to heavy siltation in many parts of the sancuary has become considerably shallower resulting in the growth of many unwanted weed species such as duck weed including growth of reeds. The changes in the water depth may affect the communities of wintering and resident waterfowl.
3. It has been observed that surrounding area, especially the grassy patches, agricultural fields and marshes around the sanctuary provides important feeding grounds which are observed to be in a declining state which has adverse impact on the wintering ducks and other birds which are dependent upon these feeding grounds at Okhla.
4. Due to urban and industrial developments near by Sanctuary areas over the past few decades there has been a considerable loss of the remaining semi-natural marshes and open fields around the Yamuna and OBS is rapidly becoming an island in a concrete jungle.
5. It was observed that piles of garbage around the sanctaury areas not only polluting the air and water quality in the santuary but also contaminating and depleting the ground water in the sanctuary. Due to these reasons once the sanctuary considered safe havens for various plants, birds and animal species now looks vulnerable which needs immediate human intervention to reverse its condition.
6. During the study, on spot assessment of the of the wetland revealed severely degraded water quality with high concentration of pollutants such as TDS and low concentration of the dissolved oxygen indicated the highly degraded state of the wetland.