Public Swim Beaches


image: Little Platte Beach

Clay County Parks Department operates and maintains two public swim beaches at Smithville Lake. The beaches are located within Camp Branch and Little Platte Parks.

Both beaches are open to the public from 8:30 a.m. to sunset starting May 1 and remain open until September 15th.

Facilities include showers, changing rooms, rest rooms, and drinking fountain.

There is no life guard on duty.

Pets, glass containers, and alcoholic beverages are not permitted.



Camp Branch Beach - map

Camp Branch Beach is located on the east side of the lake within Camp Branch Bauman Park across the parking lot from the Main Park Office, Camp Branch Marina and Boat Launch.

In addition to access by vehicle, Camp Branch Beach is also accessible from Camp Branch Campground via Bonebender Trail. 

Little Platte Beach - map

Little Platte beach is located within Little Platte Park on the west side of the lake and is accessed from 180th Street. Access is by vehicle and via the new Little Platte Trail.

Nearby park attractions include: Paradise Pointe Marina, Golf Complex, and Historical Sites - Woodhenge and Akers Cemetery.


Water Quality Information

Clay County samples water quality at all designated swimming beaches at Smithville Lake on a weekly basis during the recreational season. The Missouri Department of Natural Resources has designated Smithville Lake as a body of water (lake) with recreational use category Whole Body Contact, category A (WBC-A). 

Water samples are analyzed for E. coli, a common indicator species for bacteria. It is normal for E. coli and other bacteria to be found at naturally-occurring levels in ponds, streams, rivers, lakes and reservoirs. Elevated bacteria levels are frequently associated with heavy rains; however, there are a number of other sources that may contribute to elevated bacteria levels, which may pose a health risk.

Water sample results can help visitors decide whether a particular beach is suitable for swimming, based on the bacteria levels. For waters designated as WBC-A, the state water quality standard is 126 E. Coli colonies per 100mL of water during the recreational season (April 1 to October 31). Becuse temporary fluctuations, MDNR uses a single event threshold of 190 colonies/100mL of water for E. Coli concentrations. Clay County will post signs notifying visitors that swimming is not recommended if the geometric mean of the weekly water quality sample results exceeds the equivalent of 190 E. coli colonies per 100 milliliters of water (190 mpn/100 ml). 


  Little Platte Beach Camp Branch Beach
Sample Collection Date Left Right GeoMean Left Right GeoMean
04-02-2018 4 3
1 <1
04-09-2018 <1 <1 <1filled-flag-green.jpg 7 2 4filled-flag-green.jpg
04-16-2018 2 2 2filled-flag-green.jpg 10 6 8filled-flag-green.jpg
04-23-2018 1 2 1filled-flag-green.jpg 2 1 1filled-flag-green.jpg
04-30-2018 9 19 13filled-flag-green.jpg <1 13 13filled-flag-green.jpg
05-07-2018 <1 9 9filled-flag-green.jpg 18 74 36filled-flag-green.jpg
05-16-2018 44 71 56filled-flag-green.jpg 14 18 16filled-flag-green.jpg
05-21-2018 3 8 5filled-flag-green.jpg 6 15 9filled-flag-green.jpg
05-28-2018 33 35 34filled-flag-green.jpg 110 200 148filled-flag-orange.jpg
06-04-2018 5 3 4filled-flag-green.jpg 1 4 2filled-flag-green.jpg
06-12-2018 37 44 40filled-flag-green.jpg 74 80 77filled-flag-green.jpg
06-18-2018 5 23 11filled-flag-green.jpg 6 2 3filled-flag-green.jpg
06-25-2018 18 2 6filled-flag-green.jpg 3 2 2filled-flag-green.jpg
07-02-2018 1 1 1filled-flag-green.jpg 11 2 5filled-flag-green.jpg
07-09-2018 8 13 10filled-flag-green.jpg 3 38 11filled-flag-green.jpg

contact us

Clay County 

Parks Department

Park Office
17201 Paradesian
Smithville, MO 64089

Monday - Thursday
7:00am - 8:00pm

Friday, Saturday, Sunday
7:00am - 9:00pm

Holidays: Thursday thru Monday

7:00am - 9:00pm


phone: (816) 407-3400
fax: (816) 407-3411