From a small herd of 14 deer in 1975, its population was reportedly 155 in 1995 and as per the latest wildlife census conducted in March 2016 its number rose to 260.

[7] The park is a swamp with floating mass of vegetation created by accrual of organic detritus and biomass with soil particles that has been thickened into a solid form called phumdis, at the south–eastern side of the Loktak Lake, which has been declared a Ramsar site.

[8] A waterway through the park provides year-round access by boats plying through the Loktak Lake, to the Pabot Hill in the north.

The swamp encompasses three hills, namely, Pabot, Toya and Chingjao that provide a refuge for the large mammals during the monsoon season.

[9] Hydro–meteorological feature of the area is marked by the dominance of the Indian tropical monsoon with an average annual rainfall of 1,183 mm (46.6 in) with July and August as the wettest months and February and March as the driest.

[citation needed] The park, primarily composed of moist semi–evergreen forests, has a rich amalgam of aquatic, wetland and terrestrial ecosystem.

[11] Aquatic flora recorded in the park include Zizania latifolia (wild rice, ishing kambong), Tripidium bengalense, Eiranthus procerus (singnang), Dioscorea bulbifera (phumha), Cynodon dactylon (tinthou), Alpinia galanga (pullei), Eichhornia crassipes (kabokang), Hedychium coronarium (loklei), Nelumbo nucifera (thambal) and Phragmites karka (tou).

In a 1960 estimate, the phumdi vegetation had been structured into 45% Phragmites karka, 25% Erianthus ravennae (elephant grass), 15% Saccharum munja, 5% S. latifolium, 5% Alpinia allughas and 2% Saccharum procerum and 3% other species, including Zizania latifolia; Zizania latifolia is the plant much relished by the sangai deer.

Some of them are the East Himalayan pied kingfisher, black kite, lesser sky-lark, northern hill myna, Indian pied myna, North Indian black drongos, lesser eastern jungle crow, yellow headed wagtail, spotbill duck, blue-winged teal, ruddy shell duck, threatened hooded crane, Burmese sarus sarus crane, Indian white-breasted waterhen and crimson-breasted pied woodpecker.

[8] Conservation measures suggested relate to development and implementation of a management plan giving priority to long term conservation, monitoring the condition of habitat and to take timely corrective measures by enforcing strict protection of core areas, particularly with reference to the water level due to the Loktak Hydro Electric Power Project.

Manipur Tourism Department arranges conducted day tours to the Loktak Lake and the Keibul Lamjao Park.