Sometimes the weather does the work for you. Mid-week overcast conditions at Castaic Lake triggered one of the better bites of the season so far — and with the copper sulfate treatment now complete and the water beginning to clear, the stage is being set for what could be one of the most exciting few weeks of summer fishing at Castaic. Guide Jim Taibi of 661Fishing.com has the full June 28th report. Here's what you need to know.

⚠️ Important Notices for All Anglers:

• Fishing is CATCH AND RELEASE ONLY at this time
• No body contact with the water — swimming and skiing are not permitted
• West Ramp only for launching
• Lake closed Mondays and Tuesdays

🎣 Largemouth & Smallmouth Bass

If you were on the water mid-week under those overcast skies, you know. The cloud cover flattened the light, killed the surface glare, and turned both largemouth and smallmouth loose — dropshot and Carolina rigs were producing both numbers and size. Overcast conditions at Castaic are a green light to get on the water fast, and this week proved it again.

The 20 to 30-foot zone is where the quality fish are living. The depth range has crept slightly deeper compared to earlier in the month, which is typical as summer sets in and fish settle into their warm-weather holding patterns. Stay focused in this zone with finesse presentations and you'll find fish.

Jim's hot baits this week — and for good reason: The C3 Baits Prototype Worm in Purple Haze and the C3 Baits Slim Pro in Cinnamon fished wacky style, both on a dropshot rig, were the standout producers. These two combinations have now been Jim's go-to at Castaic for several weeks running — when a guide on his home water keeps going back to the same baits week after week, that's not a coincidence. If you're not fishing both of these right now, you're leaving bites on the table.

Topwater and reaction baits are still limited. There's only a smattering of surface and reaction bait action at this point, and Jim explains why — the shad are still holding in ten to twenty feet of water, and the bass are waiting for the water clarity to stabilize before they push those bait schools into the backs of the coves. That transition, when it happens, kicks off four months of some of the best topwater bass fishing in Southern California. It's coming — the pieces are in place — but the bass are letting the conditions tell them when to make the move.

🔬 Post-Treatment Update — Why the Next Few Days Matter

The lake was treated with copper sulfate last Friday, and the clearing process is underway. Jim's insight here is worth understanding: it's not just the treatment that clears the water — it takes a few days of high pressure to drive the remaining particles to the bottom and fully restore clarity. Watch the weather. When that high pressure sets in and the water clears, the conditions that trigger both the topwater bass bite and the striper surface bite will align.

When that window opens, it can open fast. Be ready before it does — not scrambling for gear after it happens.

🐟 Striped Bass

The topwater striper bite remains largely absent this week — random blow-ups and cut sardine bites are still the only consistent striper action. The conditions aren't quite there yet, but the combination of clearing water post-treatment and stabilizing lake level is exactly what this bite needs. The Lucky Craft Gunfish and Fishus Espetit 95 stay rigged and ready. When the striper schools commit to the surface, the window can be short and the action can be fast — and the anglers who have the right gear in hand are the ones who make the most of it.

📍 Castaic Lake Conditions & Info — Week of June 28, 2026

🛒 What to Have in Your Box This Week

Based on Jim's report, here's what to pick up before your next Castaic trip:

Finesse Rigs (Primary Pattern):

• C3 Baits Prototype Worm – Purple Haze — Jim's top dropshot bait of the week; multiple weeks of consistency make this a must-have right now
• C3 Baits Slim Pro – Cinnamon — Wacky rigged on a dropshot; the quality fish setup Jim keeps coming back to
• Dropshot Hooks, Weights & Fluorocarbon Leader — As water clears post-treatment, light fluorocarbon becomes even more important; don't run heavy line in cleaner water
• Light-Line Carolina Rig Components — Swivels, bullet weights, and fluorocarbon for covering the 20–30 foot zone

Reaction Baits (Have Them Ready):

• Hard Jerkbaits — Post-treatment clarity is exactly the condition that makes jerkbaits more effective; have one tied on
• Soft Jerkbaits & Crankbaits — The transition to reaction baits accelerates as water clears and fish become more aggressive; build this into your rotation now

Topwater — Load Up Before It Fires:

• The shad push and post-treatment clarity are the two ingredients needed to trigger the wolf pack topwater bass bite. When both arrive at the same time, the bite can go from zero to wide open in a single afternoon. Have your topwater box stocked before that happens.
• Lucky Craft Gunfish — Jim's committed striper topwater bait for 2026
• Fishus Espetit 95 — His second first-call topwater striper bait; casts far and hooks fish well
  
  

📍 Your Local Castaic Lake Tackle Headquarters

Tackle Express is just minutes from Castaic Lake and a short drive from Pyramid Lake. We follow Jim's reports every week, stock the baits that are actually producing, and our staff knows these local waters firsthand. As the water clears post-treatment and the bite transitions over the next few weeks, stop in and we'll make sure you're ahead of the curve — not chasing it.

Tackle Express
Your local SoCal fishing tackle source — in Santa Clarita and online.

Report courtesy of Jim Taibi — 661Fishing.com. Jim is a licensed California fishing guide specializing in Castaic and surrounding SoCal waters.