REMOving invasive species from the san marcos river

San Marcos River
Polespear Tournaments

invasive biomass removed
through tournaments:
suckermouth catfish: 2,792 at 1,449.94 lbs
Tilapia: 106 at 196.59 lbs
Total: 1,646.53 lbs



winter Polespear Tournament 2018 (wPT2018)

tournament begins | November 1, 2018

Tournament ends | november 21, 2018

location | San Marcos, texas

fee (includes tshirt IF REGISTERED BY 10/15) | $12

sold out!


WPT2018 Tournament winners and Top Contenders





Tournament Waiver


basic Info

  • The Winter Polespear Tournament will begin on Thursday November 1st, and end on Wednesday, November 21st.


  • Participants will be allowed to register for 3 time slots, each time slot 5 hours long.

  • After you have registered on eventbee, email Nick Menchaca at to sign up for your time slots.

  • Don't pass up on your only legal opportunity to spearfish in the upper San Marcos River!

Register ASAP! 


Upper section: Salt Grass to Upper Rio Vista

Lower Section: Rio Vista Falls to i35

Participants with substantial results will have the opportunity to volunteer with Atlas Environmental year round and continue removing invasive species.

rules and regulations

Rules & Regulations:
- - Ages 18 and up - -

•Polespears under 6ft only.

•Freediving/snorkeling only! NO scuba diving of any kind including surface supplied diving (i.e. Brownies Third Lung system or similar).

•No spear guns or Hawaiian slings.

•ALWAYS dive with a friend either in the water or on the banks monitoring close by. If this person is not on the schedule he is not allowed to spear.

•Let someone know when/where you plan on diving and when you will return.

•A valid Texas fishing license and Drivers License or ID card are required on person.

•Spearfishing of species other than targeted species is prohibited.

  • Targeted Species:

    • Suckermouth Catfish, Tilapia,

    • Red Rimmed Melania Snails, Giant Ramshorn Snails.

•You must spearfish in designated section of river and during time scheduled only. 

•No violations of park ordinances or state laws are permitted. 

•You must maintain 30 feet clearance between yourself and others while spearing.

•It is your responsibility to have a stringer or some other means of holding your haul.

•The upper section starts at Salt Grass and ends before the first chute at Rio Vista.

•The lower section begins at the first pool at Rio Vista falls and ends at IH 35.

•Game Wardens and Park Rangers will be out enforcing ordinances and laws.

•At the end of your time slot, bring your haul to weigh in at 305 Riverside Dr.

awards categories

We will have engraved awards for:

--Most weight removed 1st, 2nd, and 3rd

--Top haul 1st, 2nd, and 3rd

--Most suckermouth catfish

--Most tilapia

--Heaviest suckermouth catfish

--Heaviest tilapia

--Smallest suckermouth catfish (precision shot!)

--Smallest tilapia (precision shot!)

--Most snails

--Most trash removed

wPT2017: sold out!

Tournament winners: 

SPT Logo .png

Spring Polespear Tournament 2018 (SPT2018)

tournament begins | February 9

Tournament ends | march 5

location | San Marcos, texas

fee (includes tshirt IF REGISTERED BY 2/8) | $12

Past Tournament Results