| 1. | All five piers are strengthened on the upstream face by pointed cutwaters.
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| 2. | The unusual upstream facing outfall of the Derwent is man made.
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| 3. | The upstream faces of the piers show stepped cutwaters and footings.
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| 4. | The upstream face consisted of basalt concrete moulded blocks set in a cement mortar.
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| 5. | The upstream faces of the piers now have triangular cutwaters.
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| 6. | The stonework of the upstream face was also significantly decayed.
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| 7. | The upstream face of the dam was also coated in asphalt for protection against water.
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| 8. | In 1916 there was another major slide, this time on the upstream face of the dam.
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| 9. | An impervious clay membrane was laid in the upstream face to provide continuity with the 1877 embankment.
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| 10. | A concrete-face rock-fill dam ( CFRD ) is a rock-fill dam with concrete slabs on its upstream face.
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