FIG. 7 in The Walker Scale: Details of a Method for Assessing Beach-Spawning Runs of California Grunion Leuresthes tenuis (Atheriniformes: Atherinopsidae)

FIG. 7. Report using Walker Scale in smaller segments, in the context of a coastal construction project. Map of Santa Ana River, California from Merkel & Associates, 2017 (used with permission of Keith Merkel). This would be reported as a W-4 for the Grunion Greeters for 4/12, a W-2 on 4/13, and a W-1 on 4/14. The detailed locations given for the run assist in project management along the shoreline to avoid nest sites during construction.