(b) Each staff gauge shall have the following clearly marked thereon:

1. (1) Minimum streamflow.

   1. (A) A zone marked in red.
   2. (B) If the water level is at or below this mark, all diversions shall cease except diversions for domestic and municipal domestic use;

2. (2) Allocation level.

   1. (A) A zone marked in yellow.
   2. (B) If the water level is in the yellow zone, only water lawfully diverted that has not yet become subjected to reduction by allocation, water that has been allocated, or water usable without allocation (as defined hereinafter in 15 CAR § 20-702) may be diverted from the stream;

3. (3) Normal diversion level.

   1. (A) A zone marked in green.
   2. (B) If the water level is in the green portion of the staff gauge at the point of diversion:

(i) All allocations shall cease;

1. (ii) Riparians may resume water diversions; and

   1. (iii) The nonriparian permittees may divert such water as shall have been permitted to them; and

2. (4) Other pertinent water level markings deemed appropriate by the director.

   1. (c) It shall be unlawful for anyone to remove or alter any staff gauges placed for these purposes, and all such staff gauges shall indicate on them that they are the property of the Arkansas Natural Resources Commission.