| Ecosystem | Hydrogeomorphic (HGM) | Vernacular name of the HGM unit* | ||
| Class/system (Level 1) | Sub-class/sub-system (Level 2) | Type/unit (Level 3) | ||
| Aquatic ecosystems | Inland aquatic ecosystems | Lotic ecosystems | Rivers | Eru, Nadi |
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| Rivulets | Chinna Yeru |
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| Tributaries | Upanadi |
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| Streams | Vagu |
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| Creeks | Selayeru |
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| Waterfalls | Jalapatam |
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| Springs | Uta, Bugga, Chelama |
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| Canals | Kalava |
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| Lentic ecosystems | Lakes | Sarassu |
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| Ponds | Kumta, Madugu |
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| Vernal pools | Samuham, Niti Gumta, Madugu |
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| Seeps | Uta, Bugga, Chelama |
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| Reservoirs | Jalasayam |
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| Farm ponds and reservoirs | - |
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| Drainage ditches | Kamdakamu, Parikha |
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| Water tanks | Cheruvu |
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| Wetland ecosystems | Swamps | Chittadinela, Tamparabhumi |
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| Marshes | Uppuparra, Badavanela, Buradanela |
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| Rice fields | Varipolam |
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| Riparian ecosystems | - | - |