[{"data":1,"prerenderedAt":260},["ShallowReactive",2],{"leaderboard-total":3,"spot-seo-ewens-ponds-portland":9,"spot-ewens-ponds-portland":51},{"entries":4,"total":5,"period":6,"type":7,"generated_at":8},[],0,"all_time","reports","2026-10-03T06:32:05.526386Z",{"title":10,"description":11,"canonical_url":12,"og_image":13,"structured_data":14,"breadcrumbs":44},"Snorkeling Conditions at Ewens Ponds - How's the Spot","Check snorkeling conditions at Ewens Ponds, Victoria. Hazardous conditions, water 14.6°C, waves 1.82m","https:\u002F\u002Fhowsthespot.com\u002Fspots\u002Fewens-ponds-portland","https:\u002F\u002Fhowsthespot.syd1.cdn.digitaloceanspaces.com\u002Fspots\u002Fimport_ewens-ponds-portland_0_1d30601d7bf1.jpg",[15,28],{"@context":16,"@type":17,"name":18,"description":19,"url":12,"geo":20,"address":24},"https:\u002F\u002Fschema.org","Place","Ewens Ponds","Ewens Ponds is a surreal series of three spring-fed limestone sinkholes connected by shallow, crystal-clear channels in South Australia's Limestone Coast, just 10 minutes east of Port MacDonnell. W...",{"@type":21,"latitude":22,"longitude":23},"GeoCoordinates",-38.026621,140.789729,{"@type":25,"addressRegion":26,"addressCountry":27},"PostalAddress","Victoria","Australia",{"@context":16,"@type":29,"name":30,"description":11,"url":12,"breadcrumb":31},"WebPage","Snorkeling Conditions at Ewens Ponds",{"@context":16,"@type":32,"itemListElement":33},"BreadcrumbList",[34,39,42],{"@type":35,"position":36,"name":37,"item":38},"ListItem",1,"Home","https:\u002F\u002Fhowsthespot.com",{"@type":35,"position":40,"name":26,"item":41},2,"https:\u002F\u002Fhowsthespot.com\u002Fexplore?region=victoria",{"@type":35,"position":43,"name":18,"item":12},3,[45,47,49],{"label":37,"href":46},"\u002F",{"label":26,"href":48},"\u002Fexplore?region=victoria",{"label":18,"href":50},"\u002Fspots\u002Fewens-ponds-portland",{"id":52,"name":18,"slug":53,"latitude":22,"longitude":23,"description":54,"difficulty":55,"image_url":13,"status":56,"tide_constituents":57,"hazard_entries":108,"access_info_structured":179,"area_boundary":135,"routes":135,"created_at":188,"updated_at":189,"today_conditions":190,"today_verdict_view":211,"images":238,"submitted_by":257,"region_name":26,"verification_status":259,"verified_at":135,"disputed":196,"verifier_count":5,"last_verified_display_name":135},"b20762d4-2351-4b9c-be0b-b98d7bf54cf2","ewens-ponds-portland","Ewens Ponds is a surreal series of three spring-fed limestone sinkholes connected by shallow, crystal-clear channels in South Australia's Limestone Coast, just 10 minutes east of Port MacDonnell. With visibility exceeding 80 metres — among the best of any freshwater site in Australia — these spring-fed ponds offer a dazzling underwater garden of luminous green submerged plants found nowhere else on Earth. Snorkellers drift effortlessly from Pond 1 through lush, gently current-pushed channels to Pond 3, passing through teal-coloured voids and past steep, plant-lined walls. The ponds remain a consistent 10–15 °C year-round, and the rare Ewens pygmy perch and freshwater crayfish can be spotted among the reeds and along the pond floor.","intermediate","published",{"name":58,"amplitude":74,"phase":90,"latitude":22,"model":106,"epoch":107},[59,60,61,62,63,64,65,66,67,68,69,70,71,72,73],"2N2","J1","K1","K2","M2","M4","MF","MM","N2","O1","P1","Q1","S1","S2","T2",[75,76,77,78,79,80,81,82,83,84,85,86,87,88,89],0.0040144674009551466,0.0094472708892947,0.1771963396786816,0.0382052588983293,0.13123012943006737,0.003966762221131018,0.005547467510112549,0.0033425001238926552,0.006472566858929622,0.13069737086806246,0.053871435907292195,0.03298304175167068,0.009633148332202817,0.13710187913829838,0.010709585516416752,[91,92,93,94,95,96,97,98,99,100,101,102,103,104,105],196.66375322296926,277.92211357394143,252.88299323639671,112.64748038177669,50.752520281988886,117.90578667460768,163.6345163694868,246.95755793272656,264.56244130092057,235.603626225349,250.0284532976014,224.5327396916863,11.025966352769728,112.97334756256896,104.17921255620473,"EOT20","1992-01-01T00:00:00Z",[109,114,118,121,126,129,132,136,139,142,145,148,151,154,157,160,163,166,169,172,176],{"name":110,"description":111,"severity":112,"season_start":36,"season_end":113},"Cold Water Hypothermia","Consistent water temperature of 15°C (59°F) year-round. A full-length wetsuit is mandatory; gloves, hood and boots strongly recommended. Even in summer the cold can quickly exhaust swimmers.","warning",12,{"name":115,"description":116,"severity":117,"season_start":113,"season_end":113},"Current in Connecting Channels","A gentle but persistent current flows through the narrow channels connecting the three ponds, pushing snorkellers from Pond 1 towards Pond 3.","caution",{"name":119,"description":120,"severity":117,"season_start":36,"season_end":113},"Deep Pockets & Cave","The third pond reaches 13 metres depth and contains a small cave. Snorkellers may inadvertently descend beyond safe breath-hold limits.",{"name":122,"description":123,"severity":112,"season_start":124,"season_end":125},"Annual Seasonal Closure","The ponds are closed annually for snorkelling and diving from 1 September to 30 November to protect unique plant life.",9,11,{"name":127,"description":128,"severity":112,"season_start":36,"season_end":113},"Cold water temperatures","Average water temperature is 10–15°C year-round; full-length wetsuits are mandatory to prevent hypothermia.",{"name":130,"description":131,"severity":117,"season_start":124,"season_end":125},"Annual closure period","The ponds are closed for snorkelling and diving annually from 1 September to 30 November (inclusive) for environmental protection.",{"name":133,"description":134,"severity":112,"season_start":135,"season_end":135},"Catastrophic fire danger closure","The park closes on days of Catastrophic Fire Danger and may close on Extreme Fire Danger days. This risk is highest during the dry summer months.",null,{"name":137,"description":138,"severity":117,"season_start":135,"season_end":135},"Permit-only entry","Snorkelling requires a pre-booked one-hour time slot permit; entry without a permit is prohibited. Maximum two sessions per person per day.",{"name":140,"description":141,"severity":117,"season_start":124,"season_end":125},"Annual Vegetation Closure","Ponds are closed annually from 1 September to 30 November (inclusive) to allow aquatic vegetation to regenerate after summer pressure.",{"name":143,"description":144,"severity":112,"season_start":135,"season_end":135},"Low Water Levels","Water levels can drop due to reduced groundwater inflows, occasionally forcing additional closures. Monitor park website before visiting.",{"name":146,"description":147,"severity":117,"season_start":135,"season_end":135},"Cold Water Temperature","Spring-fed water remains cold year-round (12–14°C). A thick wetsuit (5mm+) is strongly recommended to prevent hypothermia.",{"name":149,"description":150,"severity":117,"season_start":135,"season_end":135},"Current in Connecting Creeks","A gentle current flows through the channels connecting the three ponds. Drift snorkelling is the norm, but care is needed to avoid being swept downstream.",{"name":152,"description":153,"severity":112,"season_start":135,"season_end":135},"No Lifeguards \u002F Remote Location","No on-site supervision. The ponds are in a remote conservation park with limited phone reception. Snorkel with a buddy.",{"name":155,"description":156,"severity":117,"season_start":135,"season_end":135},"Permit and time-limited sessions","A pre-booked permit is required; only one-hour time slots are available. You must exit by the end of your slot. Snorkellers must enter at Pond 1 and exit at Pond 3 — no out-and-back swimming is permitted.",{"name":158,"description":159,"severity":117,"season_start":135,"season_end":135},"Buddy system required","You must snorkel with a buddy and complete an online indemnity form before entering the water.",{"name":161,"description":162,"severity":112,"season_start":124,"season_end":125},"Seasonal Pond Closure","The ponds are closed annually from 1 September to 30 November for aquatic vegetation regeneration. No snorkeling permitted.",{"name":164,"description":165,"severity":117,"season_start":135,"season_end":135},"One-Way Route Only","Snorkelers must enter at Pond 1 and exit at Pond 3. Exiting at the wrong pond means a 1 km walk back along the roadside.",{"name":167,"description":168,"severity":112,"season_start":36,"season_end":113},"Strong downstream current","The constant flow from the pond outflows creates a steady current that can sweep snorkelers downstream faster than expected, especially after rain.",{"name":170,"description":171,"severity":112,"season_start":36,"season_end":113},"Cold freshwater temperature","The limestone-fed spring water remains very cold year-round (12–15°C), increasing the risk of cold shock and hypothermia without a wetsuit.",{"name":173,"description":174,"severity":117,"season_start":175,"season_end":124},"Limited visibility in creek sections","While the ponds are famously clear, narrower sections of Eight Mile Creek can have reduced visibility due to vegetation and sediment.",6,{"name":177,"description":178,"severity":117,"season_start":124,"season_end":125},"Seasonal closure for conservation","The ponds are closed annually from 1 September to 30 November for ecological protection.",{"directions":180,"parking":181,"facilities":182,"fees":186,"access_method":187},"Located 36 km south of Mount Gambier. Access via Port MacDonnell Road (turn off at Lower Nelson Road east of Port MacDonnell). The car park is at Pond 1.","Carpark available on-site at Pond 1.",[183,184,185],"parking","toilets","picnic_tables","Free entry; permits required. 1-hr session: $33\u002F2 people. Annual pass: $130\u002F2 people. 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