The Reservoirs Act 1975 (Capacity, Registration, Prescribed Forms, etc.) (Wales) Regulations 2016

Regulation 8

SCHEDULE 3 Prescribed matters relating to high-risk reservoirs of which an undertaker is to keep a record

Interpretation

1.  In this Schedule “fetch” (“cyrhaeddiad”) means the effective length of the reservoir over which wind can build up waves.

Prescribed matters

2.  An undertaker of a high risk reservoirs must keep a record of the following matters—

(a) any person who has acted as an undertaker or engineer under the 1975 Act;

(b) flood plan details;

(c) means of access to the reservoir;

(d) category of the reservoir (i.e. whether impounding or non-impounding), its use, the certified level up to which it may store water, its surface water area, capacity and fetch;

(e) structural character of the dam(s), reservoir walls or embankments, their date of completion, height, level of the top of the dam(s), reservoir walls or embankments and of the wave wall above Ordnance Datum;

(f) details of draw off works, bottom outlets, or any other means of lowering the water level, together with their maximum rates of discharge;

(g) physical characteristics of direct and indirect catchment areas of the reservoir and method of filling from indirect catchment area;

(h) standard average annual rainfall on direct and indirect catchment areas of the reservoir;

(i) spillway works, their type, location and level and the safety provisions made in connection with their operation;

(j) measures taken in the interests of safety on the recommendation of a qualified civil engineer;

(k) supervising engineer directions and recommendations;

(l) unusual events which could affect the safety of the reservoir;

(m) certificates given under the 1975 Act or under the 1930 Act;

(n) reports made under the 1975 Act or under the 1930 Act;

(o) directions made under the 1975 Act;

(p) appointment of referees under the 1975 Act;

(q) re-use, abandonment and discontinuance;

(r) drawing register;

(s) instrumentation at the reservoir;

(t) records of extent of opening of valves, gates and penstocks, related information and directions by an engineer.