Surf waves, trapped in a U-shaped trough hung on the sea side of the concrete pier, can feed water through a pipe to the south side of the pool, flushing it. If the trough bottom is open, except for narrow edges, the surf will rise and fall inside. If a non-floating dense Fiberglas board lays on the bottom edges, water will be trapped in the trough when the surf recedes. The trapped water flows through a pipe inserted in a hole bored through the dirt or concrete on the south end and dangled down to and under the south-side sand. Several connections feed water through pipes pointing north under the surface.
\nA quicker and simpler flushing solution is to use an electronic motor-driven water pump to feed a trickle of sea water to the rocks during the day before the animals’ night roosting. A float moving up and down in the surf can operate a pump. A cable anchored to a railroad car axle with wheels can hold the pump. The float moving up in the surf pulls the pump. An electric clock triggers a bypass valve to control the flush time. Meanwhile, the sea lions and birds draw the tourists.
\nMax Treece, engineering physicist
\nPlaya del Pac\u00edfico<\/p>","protected":false},"excerpt":{"rendered":"
Surf waves, trapped in a U-shaped trough hung on the sea side of the concrete pier, can feed water through a pipe to the south side of the pool, flushing it. If the trough bottom is open, except for narrow edges, the surf will rise and fall inside. If a non-floating dense Fiberglas board lays […]<\/p>","protected":false},"author":726,"featured_media":291005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"11560","_seopress_titles_title":"Here's a simple way to flush Children's Pool","_seopress_titles_desc":"","_seopress_robots_index":"","jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[11560,11552],"tags":[],"class_list":["post-291004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-jolla-village-news","category-opinion"],"_links":{"self":[{"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/posts\/291004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/users\/726"}],"replies":[{"embeddable":true,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/comments?post=291004"}],"version-history":[{"count":0,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/posts\/291004\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/media\/291005"}],"wp:attachment":[{"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/media?parent=291004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/categories?post=291004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.sdnews.com\/es\/wp-json\/wp\/v2\/tags?post=291004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}