Month: September 2021

Fishing Report: September 28th, 2021

Season Opening with 2.563 peacocks!

This report was put together last night by our HQ Staff in Montevideo, Uruguay, to inform the incoming 24 anglers of the conditions they will find on arrival next week on our private rivers on the Matupiri and Igapo Acu Indian Reserve selected as the best water levels in the Amazon.
The departing 3 parties of  21 anglers had a great time and landed 2.563 fish on the Matupiri. Party leaders were Lowell, Webb, and Matheson.
This last week-end, Protec and Herbert parties with a total of 16 anglers landed in only 2 ½ days 741 fish. with 13 over 10 lbs fishing. Water levels are dropping slower than forecasted in our previous report, but fishing is going from fair to good.These rivers are in our South West Zone which typically enjoys low water this time of year (see map below). Fish size should be going up day by day as the last water pours out of the jungle. This trend should stabilize just below the jungle line in the next 6-10 days, and fishing is expected to continue to improve and be very good until we change rivers towards mid-October. (See water level report below).

(click on the table to see it at full size)

Water level report on South West Zone

(see Fishing Zones map below)

Water levels in the Matupiri and Igapo-Acu continue to drop very slowly, and this trend should remain over the next couple of weeks, as seen below in our guesswork data analysis which forecasts above average rainfall for this time of the year.

Today's 10-Day Accumulated Rainfall Forecasts are for the towns marked in orange below, which affect water levels on the Matupiri on South West Zone. The accumulated rainfall between 1.5 and 2 inches for most towns means that water levels will drop reasonably in the region.
  • Manicore: 1.65 inches (marked as “1” in the 3 Month Rain Forecast Map)
  • Novo Aripuana: 2.45 inches (idem “2”)
  • Autazes: 1.17 inches (idem “3”)
  • Borba: 1.16 inches (idem “4”)
  • Humaita: 2.30 inches (idem “5”)

Last week's Accumulated Rainfall Forecast was as follows:
  • Manicore: 1.58 inches
  • Novo Aripuana: 1.26 inches
  • Autazes: 0.94 inches
  • Borba: 1.02 inches
  • Humaita: 1.71 inches

Sources: and

3-Month Rain Anomaly Forecast In Our Four Fishing Season Zones

(valid for September-October-November)

Source: CPTEC/INPE, Brazil

In the map above, note that our preferred fishing area for this time of the year, South West Zone, is in light blue which means a slight positive anomaly; ie.: it should receive slightly more rainfall than the expected (low) amount for this time of the year.

River Plate Anglers has access to 10 private river areas that drain some 30 million acres of pristine Amazon rainforest populated almost exclusively by indigenous groups that allow River Plate to fish their waters on an exclusive basis in return for various forms of support. Having so many rivers is part of our River Plate Advantage™. The other part of our River Plate Advantage™ is keeping up to date on water levels in all those areas. We do that from an office complex in Montevideo, Uruguay, we have dubbed our Situation Room. There, we pore over river data and weather forecasts basin-wide on a daily basis to ensure our anglers fish waters that are in prime condition. Our competitors, with few waters to fish, poor mobility, and limited insight into basin-wide water level fluctuations rely largely on guessing and hoping. We rely on facts.