Middle Gill
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Middle Gill Inner Gill in the lower reaches  | 
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| Data | ||
| location | Cumbria | |
| River system | Tyne (England) | |
| Drain over | Black Burn (South Tyne) → South Tyne → Tyne → North Sea | |
| River basin district | Northumbria | |
| source | in Greencastle Tarn  54 ° 45 ′ 16 ″ N , 2 ° 28 ′ 16 ″ W  | 
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| muzzle | in the Black Burn coordinates: 54 ° 46 ′ 47 "  N , 2 ° 28 ′ 1"  W 54 ° 46 ′ 47 "  N , 2 ° 28 ′ 1"  W 
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The Middle Gill is a watercourse in Cumbria , England . It arises as an outflow of the Greencastle Tarn on its north side and flows in a northerly direction to its confluence with the Black Burn .