Updated map based on reply from the city: Jerry Russom Memorial Park is a City park and all of our City parks require leashes.  If someone enters from Canyon Oak, they are entering into a City park. If someone enters from the other side, they are entering Marin County Open Space.  The signs on that side are put up by the Marin County Open Space District.  If walking west along Old Lucas Valley Rd from Lucas Valley Rd, the park entrance is about 700 feet west of Water Tank Fire Rd.  It sounds like we need another sign there informing people of the leash laws in the park. 