(Photo: WILLIAM MOORE) Volunteer Dallas Drda takes a water sample from Beaver Lake during Secchi Day last year. Secchi Day will begin at 8:30 a.m. Aug. 20 this year at Prairie Creek Recreation Area on Beaver Lake, east of Rogers. In addition to fun and activities, volunteers are needed to help measure water clarity in the lake. 717-3807 or bwdh2o.org.

THIRD FRIDAY WALK — Rogers Historical Museum open until 9 p.m. 621-1154 or rogersarkansas.com/museum. Book signing with Monte Harris, author of “Bentonville.”

SECCHI DAY — 8:30 a.m., Prairie Creek Recreation Area on Beaver Lake, east of Rogers. Volunteers needed to collect water samples. Activities also held at the east and west shelters for all ages. 717-3807 or bwdh2o.org.

TUESDAY, AUG. 23

Art and Music

“REST IN PEACE” — A photo exhibit examining death and dying in the Arkansas Ozarks of the 1800s and early 1900s, Shiloh Museum, Springdale. On view through Dec. 17 with images of funerals, cemeteries, mourning attire and memorial activities such as Decoration Day. Free. 750-8165.

Learning

COMPUTER CLASS — 9:30 to 11:30 a.m., Fayetteville Public Library. Free class on how to keep email boxes organized and spam free. Registration required. Must have current library card. 856-7250.

OTHER

Auditions, Entries, Volunteers

BLUES CHALLENGE — Entries must be received by Aug. 20. Competition will be held at 6 to 11:30 p.m., Sep. 7. George’s Majestic Lounge. ozarkbluessociety.org/Blues_Challenge.html for submission guidelines.

FAYETTEVILLE CITY SOFTBALL REGISTRATION — Entries for adult softball must be received by Aug. 25. $425 per team for 16 games. 718-7681 or jmorrow@ci.fayetteville.ar.us.

CHORAL GROUP AUDTITIONS — 1 to 5 p.m, Sep. 10, 17. Bentonville High School Choir Room. Symphony of Northwest Arkansas is auditioning for new group. Barrett Johnson at barrett@sonamusic.org or 521-4166 (email preferred).

FAYETTEVILLE QUAKERS — 9:30 to 10:45 a.m. Sundays (followed by social hour) and 6 to 7 p.m. Wednesdays at the Bennett House (Omni Center) on 3274 Lee Avenue in Fayetteville. fayettevillefriends.org or 888-909-1110.

STRONGWOMEN EXERCISE PROGRAM — 3:30 to 4:30 p.m. Tuesdays and Thursdays, January to March, Westwood Health and Rehabilitation, 802 S. West End St., Springdale.

WATER EXERCISE CLASSES — 9 to 9:50 a.m., 10 to 10:50 a.m. and 11 to 11:50 a.m. Tuesdays, Wednesdays and Fridays at the Jones Center. $25 per month. Water Movement, Arthritis Aqua and Fibro Fit. The Jones Center in Springdale has indoor and outdoor walking tracks and trails, and the Fitness Center has weights and equipment for use, all for free. dhenders@jcf.jonesnet.org or 756-8090 ext. 3518.

Learning

FAYETTEVILLE INTERNATIONAL FOLK DANCERS — 7:30 to 9 p.m. Tuesdays at Mount Comfort Presbyterian Church Hall. First 30-minutes devoted to teaching/learning. $3; first time free. 283-9947.

SCHMEIDING C.A.R.E.S. — delivering aging services for older adults to help negotiate the Age Maze with free information and referrals. 361-8880 or 855-361-8880.

BALANCED BODIES — 9 a.m. to 9:50 a.m. Fridays; STRETCH AND FLEX — 9 to 9:50 a.m. Tuesdays and Thursdays at the Jones Center in Springdale. Free. The Jones Center in Springdale has indoor and outdoor walking tracks and trails, and the Fitness Center has weights and equipment for use, all for free. thejonescenter.org or 756-8090.

TERRA STUDIOS, MUSE GALLERY AND COFFEEHOUSE — Free admission. Experience a wonderland of art. Explore the 10-acre art park with sculptures, fountains, murals and a stone labyrinth. Watch glassblowers make the world-famous Bluebird of Happiness. Enjoy treats in the coffee house. Visit the gallery representing more than 70 local artists. Wonderful handmade gifts. Music at Terra 1 to 4 p.m. in the gallery every Sunday. Find us on Facebook for news, events, and music listings. Check out the new event center for your special gathering. Open daily, 10 a.m. to 5 p.m., 13 miles east of Fayetteville off Arkansas 16 at 12103 Hazel Valley Road. 800-255-8995.