Lake Grapevine Experiences Substantial Fish Kill

Lake Grapevine Experiences Substantial Fish Kill

High temps, low oxygen pointed to in deaths

Fort Worth — As daytime temperatures remain above 100 degrees, Texas Parks and Wildlife Department Inland Fisheries biologist received a call Tuesday, August 30 regarding a large number of dead fish near the Silver Lake Marina – in a cove near the dam at Lake Grapevine. Water is a very interesting medium: as the temperature increases, the solubility of gases (specifically oxygen) decreases. With this in mind, fish are more likely to die of low oxygen stress when water temperatures are elevated because less dissolved oxygen is held in warm water and the fish’s metabolic requirements for oxygen are increased as temperature increases.

Dissolved oxygen levels were just 1.2 parts per million (ppm) Tuesday morning. Oxygen levels below 3 ppm can cause fish to become stressed and die. “The fish kill affected several species including gizzard and threadfin shad, bluegill, white bass, freshwater drum, largemouth bass, smallmouth bass, and white crappie,” said TPWD fisheries biologist Tom Hungerford. “By far the most abundant fish were the shad species,” Hungerford added.

TPWD staff conducted counts along transects to estimate the total number of fish impacted. “Based on our transects we estimated the total number of fish lost at 124,360 with 98.8% being threadfin shad,” said TPWD Kills and Spills biologist Melissa Dudley. “Less than 1% of fish observed were game fish,” she added. Additionally, a water sample was also collected and analyzed to rule out harmful algal blooms. The extreme temperatures and severe drought have impacted the amount and quality of water throughout Texas.

Recommended for You

If you've been catching catfish with the same method for years, it's time to change it up and learn a new baiting technique. Fishing How-To

Your Guide for the Best Catfish Baits

G&F Staff

If you've been catching catfish with the same method for years, it's time to change it up and...

Try these tips to improve your wild boar hunting skill set. Hogs

Quick Tips: How to Spot and Stalk a Hog

Ian Nance - May 28, 2019

Try these tips to improve your wild boar hunting skill set.

 Several factors need to be evaluated before reaching a conclusion about what fly, lure or bait Trout & Salmon

How to Catch the Biggest Trout in the Stream

David Paul Williams

Several factors need to be evaluated before reaching a conclusion about what fly, lure or...

See More Recommendations

Popular Videos

Lowrance Enters Trolling-Motor Market with Ghost

Lowrance Enters Trolling-Motor Market with Ghost

Lowrance's Lucas Steward shows OSG's Lynn Burkhead what all of the fuss is about in the brand new Ghost trolling motor being brought to market by the Tulsa, Okla.-based fishing equipment manufacturer.

New Optimum and Optimum TS Downriggers from Canon

New Optimum and Optimum TS Downriggers from Canon

From rugged reliability to smooth integration of cutting edge technology across several different platforms, OSG's Lynn Burkhead learns that there's much to like about the new Optimum and Optimum TS downriggers from Canon.

13 Fishing Pathfinder Weedless Walking Bait

13 Fishing Pathfinder Weedless Walking Bait

Fresh off catching the biggest bass in ICAST Cup history, 13 Fishing pro Jessie Mizell shows OSG's Lynn Burkhead the new Big Squirm soft plastic worm and the company's unique Pathfinder topwater walking bait that is totally weedless in design.

See more Popular Videos

Trending Stories

The colder waters of early spring are prime times to use bait rigs for stripers. Other Freshwater

3 Deadly Bait Rigs For Stripers

J.B. Kasper - April 21, 2005

The colder waters of early spring are prime times to use bait rigs for stripers.

Unless you live in Antarctica, the only continent they aren't known to inhabit, there is a species Catfish

10 Biggest Catfish World Records of All Time

Jack Vitek - December 08, 2014

Unless you live in Antarctica, the only continent they aren't known to inhabit, there is a...

As most catfish anglers know, blue cats, channel cats and flatheads will eat darn near anything that fits in their mouths. Catfish

5 Ways To Catch Catfish on Lures

Keith Sutton - September 16, 2015

As most catfish anglers know, blue cats, channel cats and flatheads will eat darn near...

See More Stories

GET THE MAGAZINE Subscribe & Save

Temporary Price Reduction

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW THIS MONTH'S ISSUE

GET THE NEWSLETTER Join the List and Never Miss a Thing.

×