Hydrogeomor-phic units | Description (Field observation) | Image characteristics | Lithounits | Slope (degrees) | Drainage density | Groundwater potential/ prospects |
Alluvial plain | Gently sloping tract produced by deposition of alluvial material consisting of gravel, sand, silt and clay of varying lithology. | Tone: Bright red for cropland. Smooth Texture, irregular shape, curvilinear outlines, contiguous pattern. | Alluvium | Gentle (0 - 7) | Low | Good to moderate |
Ravenous/Gullied land | Ravine is usually associated not with an isolated gully but an intricate network of gullies formed generally in deep alluvium and entering a nearby river, flowing much lower than the surrounding tablelands. | Tone: dark brown tone, uneven nd rough texture, and moderate to high drainage density, with linear to dendritic drainage pattern. | Alluvium | Gentle (0 - 7) | Moderate- high | Moderate to poor |
Buried pediment | Unconsolidated alluvial materials fill irregularities on the sandstone surfaces. Mostly vegetated or cultivated lying at foot hills. | Tone: light green, fine texture, irregular shape and elongated, contiguous pattern | Alluvium | Gentle- moderate (8 - 14) | Low- moderate | Good to moderate |
Hills and ridges | Acts as barrier as well as carrier for ground-water flow represents areas of high runoff. This unit represents Vindhyan sandstone. | Tone: green to dark green, Coarse texture, shape linear, contiguous pattern. Development of 1st order drainage. | Sandstone | Moderate- Steep (15 - 21) | Low | Very poor to poor |
Plateau | Flat topped and arcuate, showing definite trends, scanty vegetation. Weathering is also found at some places. Quarrying activity at few places. | Tone: dark green for rock exposure to white for rock quarrying, coarse texture, irregular, dominated by linear eatures. Sparse or no vegetation, presence of quarrying activity. | Sandstone | Moderate- Steep (15 - 21) | Moderate- high | Moderate to poor |
Intermontane valley | Depression between the mountains, generally narrow and linear, filled with colluvial and fluvial deposits of varying grain size mostly sand, silt and clay. | Tone: light grey, coarse texture, irregular shape, linear and contiguous pattern, sub parallel drainage. | Sandstone | Gentle (0 - 7) | Low- moderate | Moderate to poor |
Residual hill | It represents Vindhyan sandstone, act as runoff zone. | Tone: light greyish to greenish for rock exposures. Coarse texture, shape and size-irregular and rounded, contiguous pattern. Drainage is parallel. | Sandstone | Moderate- steep (15 - 21) | Gentle | Very poor to poor |