Boettcher Park - Flathead Lake

Polson, Montana

Temperature on 8/23/2017 = 69.5F (20.8C)
Water Level on 8/23/2017 = 2,892.57 (Full Pool = 2,893.0)

Flathead Lake in northwest Montana is the largest natural freshwater lake west of the Mississippi; slightly larger than Lake Tahoe at 27.3 mi. long, 15.5 mi. wide, and max depth of 370.7 ft.

As one of the cleanest in the world, Flathead Lake is perfect for OPEN WATER SWIMMING! No sharks, no jellyfish, and no lane lanes...just clear, clean, and crisp water!

Boettcher Park is located on the southern shore of Flathead Lake in Polson MT.

In addition to a roped off swimming area between two docks, this park is a great place for the entire family with a children's playground and a LARGE lawn area. The park offers three covered areas which can be used for Weddings, family reunions, and parties!

Unless you like your water COLD, the effective swimming season is June through September. Average water temps in June are in the 60s, 70s in July and August, and then back down again in September.

Summer air temperatures average in the mid-70s to mid-80s.

"The Boardwalk" cafe is open during the summer season and servi sandwiches, drink, and soft-service ice crease!

Bathrooms are available and parking is easy.

Swim Guide shares the best information we have at the moment you ask for it. Always obey signs at the beach or advisories from official government agencies. Stay alert and check for other swimming hazards such as dangerous currents and tides. Please report your pollution concerns so Affiliates can help keep other beach-goers safe.

Beach conditions change constantly, and it is never wise to swim in open water up to 48-hours after a heavy rain. Please use caution!

QUALITÉ DE L’EAU
  • L’eau était satisfaisante dans 60 à 94 % des cas
  • Statut Historique
  • This status is based on the latest sample, taken on . Flathead Lake Open Water Swimmers updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on à
Légende de qualité de l’eau:   
FRÉQUENCE DE SURVEILLANCE

Des analyses de l’eau de cette plage sont effectuées toutes les semaines de 21 Juin à 31 Août

SOURCES

Flathead Lake in northwest Montana is the largest natural freshwater lake west of the Mississippi; slightly larger than Lake Tahoe at 27.3 mi. long, 15.5 mi. wide, and max depth of 370.7 ft.. As one of the cleanest in the world, Flathead Lake is perfect for OPEN WATER SWIMMING! No sharks, no jellyfish, and no lane lanes, just clear, clean, and crisp water!

Water at Flathead Lake's bathing beaches is not currently monitored for recreational water quality.

In 2017 FLOW Swimmers (Flathead Lake Open Water Swimmers) will launch a sampling program. FLOW Swimmers will collect water samples at 3 beaches on Flathead Lake. Water samples will be collected by FLOW Swimmers and processed by Flathead Lake Biological Research Station. The water at the bathing beaches will be tested for E.coli

Starting in 2017, FLOW Swimmers' monitoring program will run from July through to the end of August. Samples are collected weekly, for eight weeks. In addition to the Swim Guide, test results will be posted on FlowSwimmers.com and in the local newspaper (Valley Journal and Leader-Advertiser).

Monitoring Status
Montana follows federal guidelines for the monitoring of its recreational waters.
The guidelines for freshwater levels of E. coli are a geometric mean of 100 cfu per 100 mL and an STV of 320 cfu per 100 mL, measured using EPA Method 1603, or any other equivalent method that measures culturable E. coli.

E. coli
A beach is marked Green when two consecutive single sample results are under a geometric mean of 100 cfu per 100 mL and an STV of 320 cfu per 100 mL

A beach is marked Red when two consecutive single sample results are equal to or above a geometric mean of 100 cfu per 100 mL or aSTV of 320 cfu per 100 mL

A beach is marked Grey if there is no current results or no available information.

QUALITÉ DE L’EAU

Boettcher Park - Flathead Lake

Polson, Montana

QUALITÉ DE L’EAU
  • L’eau était satisfaisante dans 60 à 94 % des cas
  • Statut Historique
  • This status is based on the latest sample, taken on . Flathead Lake Open Water Swimmers updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on à
Légende de qualité de l’eau:   

Temperature on 8/23/2017 = 69.5F (20.8C)
Water Level on 8/23/2017 = 2,892.57 (Full Pool = 2,893.0)

Flathead Lake in northwest Montana is the largest natural freshwater lake west of the Mississippi; slightly larger than Lake Tahoe at 27.3 mi. long, 15.5 mi. wide, and max depth of 370.7 ft.

As one of the cleanest in the world, Flathead Lake is perfect for OPEN WATER SWIMMING! No sharks, no jellyfish, and no lane lanes...just clear, clean, and crisp water!

Boettcher Park is located on the southern shore of Flathead Lake in Polson MT.

In addition to a roped off swimming area between two docks, this park is a great place for the entire family with a children's playground and a LARGE lawn area. The park offers three covered areas which can be used for Weddings, family reunions, and parties!

Unless you like your water COLD, the effective swimming season is June through September. Average water temps in June are in the 60s, 70s in July and August, and then back down again in September.

Summer air temperatures average in the mid-70s to mid-80s.

"The Boardwalk" cafe is open during the summer season and servi sandwiches, drink, and soft-service ice crease!

Bathrooms are available and parking is easy.

Swim Guide shares the best information we have at the moment you ask for it. Always obey signs at the beach or advisories from official government agencies. Stay alert and check for other swimming hazards such as dangerous currents and tides. Please report your pollution concerns so Affiliates can help keep other beach-goers safe.

Beach conditions change constantly, and it is never wise to swim in open water up to 48-hours after a heavy rain. Please use caution!

FRÉQUENCE DE SURVEILLANCE

Des analyses de l’eau de cette plage sont effectuées toutes les semaines de 21 Juin à 31 Août

SOURCES

Flathead Lake in northwest Montana is the largest natural freshwater lake west of the Mississippi; slightly larger than Lake Tahoe at 27.3 mi. long, 15.5 mi. wide, and max depth of 370.7 ft.. As one of the cleanest in the world, Flathead Lake is perfect for OPEN WATER SWIMMING! No sharks, no jellyfish, and no lane lanes, just clear, clean, and crisp water!

Water at Flathead Lake's bathing beaches is not currently monitored for recreational water quality.

In 2017 FLOW Swimmers (Flathead Lake Open Water Swimmers) will launch a sampling program. FLOW Swimmers will collect water samples at 3 beaches on Flathead Lake. Water samples will be collected by FLOW Swimmers and processed by Flathead Lake Biological Research Station. The water at the bathing beaches will be tested for E.coli

Starting in 2017, FLOW Swimmers' monitoring program will run from July through to the end of August. Samples are collected weekly, for eight weeks. In addition to the Swim Guide, test results will be posted on FlowSwimmers.com and in the local newspaper (Valley Journal and Leader-Advertiser).

Monitoring Status
Montana follows federal guidelines for the monitoring of its recreational waters.
The guidelines for freshwater levels of E. coli are a geometric mean of 100 cfu per 100 mL and an STV of 320 cfu per 100 mL, measured using EPA Method 1603, or any other equivalent method that measures culturable E. coli.

E. coli
A beach is marked Green when two consecutive single sample results are under a geometric mean of 100 cfu per 100 mL and an STV of 320 cfu per 100 mL

A beach is marked Red when two consecutive single sample results are equal to or above a geometric mean of 100 cfu per 100 mL or aSTV of 320 cfu per 100 mL

A beach is marked Grey if there is no current results or no available information.

QUALITÉ DE L’EAU



Swim Guide divulgue les meilleures données que nous possédons au moment où vous voulez les consulter. Obéissez toujours aux avis affichés sur les plages ou diffusés par les organismes gouvernementaux. Restez vigilant et vérifiez s’il y a d’autres risques pour les baigneurs, comme les marées et les courants dangereux. Veuillez signaler les cas de pollution qui vous préoccupent pour que les affiliés puissent assurer la sécurité des personnes qui fréquentent les plages.

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