[{"data":1,"prerenderedAt":222},["ShallowReactive",2],{"leaderboard-total":3,"spot-gawler-river-mangroves-port-gawler":9,"spot-seo-gawler-river-mangroves-port-gawler":188},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"id":10,"name":11,"slug":12,"latitude":13,"longitude":14,"description":15,"difficulty":16,"image_url":17,"status":18,"tide_constituents":19,"hazard_entries":70,"access_info_structured":106,"area_boundary":90,"routes":90,"created_at":111,"updated_at":112,"today_conditions":113,"today_verdict_view":136,"images":163,"submitted_by":184,"region_name":186,"verification_status":187,"verified_at":90,"disputed":131,"verifier_count":5,"last_verified_display_name":90},"744eb0f1-6346-445f-99ac-9ab37fa67acc","Gawler River Mangroves (Port Gawler)","gawler-river-mangroves-port-gawler",-34.633745,138.493503,"The Gawler River Mangroves (Port Gawler) offer a truly unique snorkeling experience — you float through shallow, tea-coloured tidal channels winding through a dense grey mangrove (Avicennia marina) forest on the northern fringe of Gulf St Vincent. This remarkable ecosystem acts as a vital nursery for juvenile fish, crabs, and rays, with the mangrove roots forming an intricate underwater labyrinth. The water has a distinct brown-yellow hue from tannins and sediment, different from open-ocean snorkeling, and depths range from just 1 to 3 metres. Guided tours run seasonally, making this an accessible and otherworldly adventure just 40 minutes north of Adelaide.","intermediate","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_gawler-river-mangroves-port-gawler_0_1483e172a9b8.jpg","published",{"name":20,"amplitude":36,"phase":52,"latitude":13,"model":68,"epoch":69},[21,22,23,24,25,26,27,28,29,30,31,32,33,34,35],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[37,38,39,40,41,42,43,44,45,46,47,48,49,50,51],0.03161612859066764,0.013722982972016165,0.2559958670216519,0.12829525164089686,0.5740778213677699,0.0264707309330108,0.0018273719706740506,0.01400967428908841,0.03420968065748285,0.17079351332432927,0.07449049621407944,0.04015461372161025,0.0129417639025439,0.5165967940813769,0.03957060820990386,[53,54,55,56,57,58,59,60,61,62,63,64,65,66,67],240.81449019000394,278.2861008531654,269.6092787073316,259.34887922970717,192.25406461035539,332.4131131100397,302.9039949484911,271.38134341382727,285.77254026580454,249.70123389937692,263.22505035785014,237.5878129937223,243.0514892259178,243.08514885562988,216.71625463320441,"EOT20","1992-01-01T00:00:00Z",[71,77,81,84,87,91,94,97,100,103],{"name":72,"description":73,"severity":74,"season_start":75,"season_end":76},"Tidal Currents","The river channels have a tidal range of up to 2 metres. Snorkelling against an outgoing or incoming tide can be strenuous and dangerous.","warning",1,12,{"name":78,"description":79,"severity":80,"season_start":75,"season_end":76},"Silty Bottom \u002F Low Visibility","The silty riverbed is easily stirred up by fins, drastically reducing visibility (down to near-zero). Snorkellers must keep their feet off the bottom at all times.","caution",{"name":82,"description":83,"severity":80,"season_start":75,"season_end":76},"Disorientation in Mid-Channel","The middle of the channel lacks features and has a disorienting silt-and-light effect, which can cause confusion for inexperienced snorkellers.",{"name":85,"description":86,"severity":80,"season_start":75,"season_end":76},"Snag \u002F Submerged Debris Hazard","Fallen trees, submerged branches, and mangrove roots protrude beneath the surface, posing a risk of entanglement or injury if not carefully avoided.",{"name":88,"description":89,"severity":80,"season_start":90,"season_end":90},"Muddy\u002FSlippery Bottom","The mangrove floor is soft mud and can be very slippery when entering or exiting the water.",null,{"name":92,"description":93,"severity":80,"season_start":90,"season_end":90},"Shallow Water Depth","Mangrove channels are very shallow, requiring careful finning to avoid disturbing the bottom or injuring marine life.",{"name":95,"description":96,"severity":80,"season_start":90,"season_end":90},"Outgoing Tide Current","Current can pick up as the tide goes out through the narrow mangrove channels, potentially drifting snorkelers.",{"name":98,"description":99,"severity":80,"season_start":90,"season_end":90},"Submerged mangrove roots & debris","Mangrove roots and submerged branches at low tide create entanglement risk — stay aware of your surroundings.",{"name":101,"description":102,"severity":80,"season_start":90,"season_end":90},"Soft muddy bottom \u002F poor visibility","Muddy substrate and soft sediment underfoot makes standing difficult; water turns murky if disturbed.",{"name":104,"description":105,"severity":80,"season_start":90,"season_end":90},"Reduced visibility (tannin-stained water)","Tannin-stained brown-yellow water can make it difficult to see submerged obstacles and differentiate depth.",{"directions":107,"parking":108,"facilities":109,"fees":90,"access_method":110},"Approximately 40 minutes north of Adelaide. Take Port Wakefield Road (A1) north, turn left onto Port Gawler Road and follow it toward the coast. The mangrove area is accessed near the Gawler River mouth at Port Gawler.","Limited unsealed roadside parking near the Gawler River bridge\u002FPort Gawler area.",[],"shore_entry","2026-07-27T02:57:11.225141Z","2026-08-04T05:34:24.990616Z",{"verdict":114,"evaluated_at":115,"models":116},"go","2026-10-03T02:21:03.994205Z",[117,124,129],{"model_name":118,"is_favourable":119,"value":120,"threshold":121,"unit":122,"operator":123},"Wind Speed",true,9.03,10,"kn","lte",{"model_name":125,"is_favourable":119,"value":126,"threshold":127,"unit":128,"operator":123},"Wave Height",0.1,0.5,"m",{"model_name":130,"is_favourable":131,"value":132,"threshold":133,"unit":134,"operator":135},"Visibility",false,0.99,2,"","gte",{"verdict":114,"rating":137,"evaluated_at":115,"generated_at":115,"source":138,"confidence":139,"visibility":142,"parameters":143,"models_passed":145,"models_total":158},"Good","precomputed",{"level":140,"value":141},"High",100,{"score":132,"rating":90,"confidence":90},[144,146,151,154,160],{"name":125,"value":126,"label":90,"unit":128,"favourable":119,"score":145,"optimal_max":127,"marginal_max":75},3,{"name":147,"value":148,"label":90,"unit":149,"favourable":119,"score":145,"optimal_max":150,"marginal_max":76},"Swell Period",7.1,"s",8,{"name":118,"value":152,"label":90,"unit":122,"favourable":119,"score":145,"optimal_max":121,"marginal_max":153},9.0291368,15,{"name":155,"value":156,"label":90,"unit":157,"favourable":131,"score":75,"optimal_max":158,"marginal_max":159},"Precipitation",18.4,"mm",5,20,{"name":161,"value":90,"label":162,"unit":134,"favourable":131,"score":75,"optimal_max":90,"marginal_max":90},"Tidal Phase","ebb",[164,171,174,177],{"id":165,"image_url":17,"sort_order":5,"is_primary":119,"moderation_status":166,"license":167,"license_url":168,"attribution":169,"author_name":170},"e67c105b-607a-4da3-bf9e-4aa9895e2b63","approved","CC BY-SA 3.0","https:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F3.0\u002F","Photo by Fairv8","Fairv8",{"id":172,"image_url":173,"sort_order":75,"is_primary":131,"moderation_status":166,"license":167,"license_url":168,"attribution":169,"author_name":170},"3b15f37b-ac13-4211-a5e0-8374ed652ccd","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_gawler-river-mangroves-port-gawler_1_81948744ce44.jpg",{"id":175,"image_url":176,"sort_order":133,"is_primary":131,"moderation_status":166,"license":167,"license_url":168,"attribution":169,"author_name":170},"ee87ed03-79a2-48d8-8b99-19c397a1361d","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_gawler-river-mangroves-port-gawler_2_cc7c38c17f8c.jpg",{"id":178,"image_url":179,"sort_order":145,"is_primary":131,"moderation_status":166,"license":180,"license_url":181,"attribution":182,"author_name":183},"7f44b835-2d1c-4225-ade2-d53321da86c5","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_gawler-river-mangroves-port-gawler_3_491b1009ca83.jpg","CC0","https:\u002F\u002Fcreativecommons.org\u002Fpublicdomain\u002Fzero\u002F1.0\u002F","Photo by RegionVisitor90","RegionVisitor90",{"display_name":185},"Daniel","South Australia","unverified",{"title":189,"description":190,"canonical_url":191,"og_image":17,"structured_data":192,"breadcrumbs":215},"Snorkeling Conditions at Gawler River Mangroves (Port Gawler) - How's the Spot","Check snorkeling conditions at Gawler River Mangroves (Port Gawler), South Australia. Good conditions, water 16.5°C, waves 0.10m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fgawler-river-mangroves-port-gawler",[193,202],{"@context":194,"@type":195,"name":11,"description":196,"url":191,"geo":197,"address":199},"https:\u002F\u002Fschema.org","Place","The Gawler River Mangroves (Port Gawler) offer a truly unique snorkeling experience — you float through shallow, tea-coloured tidal channels winding through a dense grey mangrove (Avicennia marina)...",{"@type":198,"latitude":13,"longitude":14},"GeoCoordinates",{"@type":200,"addressRegion":186,"addressCountry":201},"PostalAddress","Australia",{"@context":194,"@type":203,"name":204,"description":190,"url":191,"breadcrumb":205},"WebPage","Snorkeling Conditions at Gawler River Mangroves (Port Gawler)",{"@context":194,"@type":206,"itemListElement":207},"BreadcrumbList",[208,212,214],{"@type":209,"position":75,"name":210,"item":211},"ListItem","Home","https:\u002F\u002Fhowsthespot.com",{"@type":209,"position":133,"name":186,"item":213},"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=south-australia",{"@type":209,"position":145,"name":11,"item":191},[216,218,220],{"label":210,"href":217},"\u002F",{"label":186,"href":219},"\u002Fexplore?region=south-australia",{"label":11,"href":221},"\u002Fspots\u002Fgawler-river-mangroves-port-gawler",1791009154628]