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Ed Adams
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2000 Rio Costilla Fly Fishing Report Archives

The Valle Vidal section of the Costilla opens on July 1st to facilitate elk calving in the park. Flows on the Costilla are regulated from Costlla Resevoir for irrigation downstream and unlike other irrigation impoundments they have a schedule of releases. High flows are Monday-Thursday and low flows from Friday-Sunday.. Flows between 30-100cfs are best but high flows have often been higher than 100cfs and low flows less than 30cfs.

July: Flows fluctuated wildly between weekdays and weekends and in mid July flows got up to 125cfs on high flow days and down to 10cfs on weekends. The high flow was better fishing Stimulator #12 on the edges, pockets and any slower water. These high flows get the better fish more active and we took some nice fish on high flow days..Best an 18" Cutbo.. We fished a dropper behind a #12 Stimulator on high days. Weekends were tough as flows were around 10cfs and fishing pressure was intense.. Later in the month flows were around 80cfs during the week and still around 10cfs on weekends. Caddis patterns worked well especially late in the day..PMD patterns worked best on weekends.

August: In early August flows were back up around 100cfs on weekdays and fishing was good with Hopper-dropper combos and Caddis dries later in the day. Low flows were about 40cfs and consequently fishing was better on weekends than in July despite increased fishing pressure. Later in the month high flows were around 60cfs and Caddis patterns produced well all day but better late.

September: They shut the flow off on 9/9 and the last day we fished here was 9/7 at a flow of 45cfs and had a great day. Very few people around and a client took a 17" Cutbo and a few Rio Grande Cutthroats to 14"

Rio Costilla Fly Fishing Reports

1999 2000 2001 2002 2003

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New Mexico Fly Fishing Report Archives



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