The roll contains nine charts detailing soundings taken by the Humber Conservancy Board during various surveys of the Upper Humber. It includes the following surveys:

1. 13–17 December 1965

2. 17 December 1965

3. 30–31 December 1965

4. 10–13 January 1966

5. 12–13 January 1966

6. 27 January–4 February 1966

7. 8 September 1966

8. 17–18 September 1966

9. 2–5 October 1966

10. 3–8 November 1966

11. 17–18 November 1966

12. 18 and 22 November 1966

13. 1–6 December 1966

14. 28 and 30 December 1966

Scale: 6 inches to 1 statute mile [1:10560]