Whacking Fatties Fly Fishing Reports and Forecasts

Colorado Fishing Report

Best Fishing Stream Name Today 8/17 8/18
1 Fryingpan River, CO 5 5 5
2 Williams Fork, CO 5 5 5
3 Bear River, CO 5 5 5
4 Smith Reservoir, CO 5 5 5
5 Lemon Reservoir, CO 5 5 5
6 Joe Moore Reservoir, CO 5 5 5
7 Clear Creek Reservoir, CO 5 5 5
8 Vallecito Reservoir, CO 5 5 5
9 Dillon Reservoir, CO 5 5 5
10 Groundhog Reservoir, CO 5 5 5
11 Trujillo Meadows Reservoir, CO 5 5 5
12 Troutvale Reservoir Number 1: Hinsdale, CO 5 5 5
13 Elevenmile Canyon Reservoir, CO 5 5 5
14 Lost Lake Slough, CO 5 5 5
15 Rio Grande Reservoir, CO 5 5 5
16 Rito Hondo Reservoir, CO 5 5 5
17 Upper Stillwater Reservoir, CO 5 5 5
18 Skagway Reservoir, CO 5 5 5
19 Haviland Lake, CO 5 5 5
20 Grand Lake, CO 5 5 5
21 Williams Creek Reservoir, CO 5 5 5
22 Shaw Lake, CO 5 5 5
23 Miramonte Reservoir, CO 5 5 5
24 Jackson Gulch Reservoir, CO 5 5 5
25 Echo Canyon Reservoir, CO 5 5 5
26 Cottonwood Lake, CO 5 5 5
27 Troutvale Reservoir Number 2, CO 5 5 5
28 Dowdy Lake, CO 5 5 5
29 Big Meadows Reservoir, CO 5 5 5
30 Alberta Park Reservoir, CO 5 5 5
31 Steamboat Lake, CO 5 5 5
32 Jefferson Lake, CO 5 5 5
33 Ruedi Reservoir, CO 5 5 5
34 North Delaney Lake, CO 5 5 5
35 Road Canyon Reservoir Number 1, CO 5 5 5
36 La Jara Reservoir, CO 5 5 5
37 Pearl Lake, CO 5 5 5
38 Fraser River, CO 5 5 5
39 North Michigan Creek Reservoir, CO 5 5 5
40 Chatfield Lake, CO 5 5 5
41 Dumont Lake, CO 5 5 5
42 East Delaney Lake, CO 5 5 5
43 Upper Dome Reservoir, CO 5 5 5
44 Chambers Lake, CO 5 5 5
45 Sylvan Lake, CO 5 5 5
46 San Luis Lake, CO 5 5 5
47 Douglas Reservoir, CO 5 5 5
48 Cimarron River, CO 5 5 5
49 Big Creek Reservoir Number 1, CO 5 5 5
50 Pinewood Lake, CO 5 5 5
51 Trinidad Lake, CO 5 5 5
52 Green Mountain Reservoir, CO 5 5 5
53 Vega Reservoir, CO 5 5 5
54 Uncompahgre River, CO 5 5 5
55 Deweese-Dye Reservoir, CO 5 5 5
56 Tarryall Reservoir, CO 5 5 5
57 Lake John, CO 5 5 5
58 Summit Reservoir, CO 5 5 5
59 Puett Reservoir, CO 5 5 5
60 Watson Lake, CO 5 5 5
61 Antero Reservoir, CO 5 5 5
62 Willow Creek Reservoir, CO 5 5 5
63 Hot Springs Reservoir, CO 5 5 5
64 Paonia Reservoir, CO 5 5 5
65 Lake Granby, CO 5 5 5
66 Shadow Mountain Lake, CO 5 5 4
67 South Delaney Lake, CO 5 5 4
68 Cowdrey Reservoir, CO 5 5 4
69 Sweetwater Lake, CO 5 5 4
70 Elk Head Reservoir, CO 5 5 4
71 Ramah Reservoir, CO 5 5 4
72 Buckeye Reservoir, CO 5 5 4
73 Muddy Creek, CO 5 5 4
74 Deep Ward Lake, CO 5 5 4
75 Island Lake, CO 5 5 4
76 Mesa Lake, CO 5 5 4
77 Brush Hollow Reservoir, CO 5 5 3
78 Deep Lake, CO 5 5 3
79 Pastorius Reservoir, CO 5 5 3
80 McPhee Reservoir, CO 5 5 3
81 Grass Valley Reservoir, CO 5 5 3
82 Big Beaver Reservoir, CO 5 5 3
83 Gunnison River: Black Canyon, CO 5 5 3
84 Rifle Gap Reservoir, CO 5 5 3
85 Rio Blanco Lake, CO 5 5 3
86 Turquoise Lake, CO 5 4 5
87 Cherry Creek Lake, CO 5 4 5
88 Clear Lake, CO 5 4 5
89 Barr Lake, CO 5 4 5
90 Crawford Reservoir, CO 5 4 3
91 Yampa River, CO 5 4 3
92 Jackson Reservoir, CO 5 3 5
93 Narraguinnep Reservoir, CO 5 3 3
94 Sweitzer Lake, CO 5 3 3
95 Highline Lake, CO 5 3 3
96 Halligan Reservoir, CO 4 5 5
97 Sanchez Reservoir, CO 4 5 5
98 Mountain Home Reservoir, CO 4 5 5
99 Spinney Mountain Reservoir, CO 4 5 5
100 Martin Lake Reservoir, CO 4 5 5
101 Adobe Creek Reservoir, CO 4 5 4
102 Prewitt Reservoir, CO 4 5 3
103 Julesburg Reservoir, CO 4 5 3
104 Lake Hasty: Bent, CO 4 5 2
105 Lake Hasty, CO 4 5 2
106 Neeskah Reservoir: Kiowa, CO 4 5 2
107 Neeskah Reservoir, CO 4 5 2
108 South Platte River: Upper, CO 4 4 4
109 Homestake Creek, CO 4 4 4
110 North Fork Big Thompson River, CO 4 4 4
111 Grape Creek, CO 4 4 4
112 Fall River, CO 4 4 4
113 Clear Creek, CO 4 4 4
114 Rio Grande, CO 4 4 4
115 Bear Creek, CO 4 4 4
116 Cochetopa Creek, CO 4 4 4
117 North Fork South Platte River, CO 4 4 4
118 Cache la Poudre River, CO 4 4 4
119 North Platte River, CO 4 4 3
120 Clear Creek: Arkansas River, CO 4 4 3
121 Totten Lake, CO 4 4 3
122 Boulder Creek, CO 4 4 3
123 Horse Creek Reservoir, CO 4 3 5
124 Joe Wright Creek, CO 4 3 4
125 Neenoshe Reservoir, CO 4 3 4
126 Michigan River, CO 4 3 4
127 Gunnison River: Lower, CO 4 3 3
128 John Martin Reservoir, CO 4 3 3
129 Roaring Fork River, CO 4 3 2
130 Roaring River, CO 4 2 4
131 Colorado River: Lower, CO 4 2 2
132 Blue River, CO 4 2 2
133 Boyd Lake, CO 3 5 5
134 Horseshoe Lake Reservoir, CO 3 5 5
135 North Sterling Reservoir, CO 3 5 4
136 Pueblo Reservoir, CO 3 5 4
137 R R Rutherford Reservoir, CO 3 5 3
138 Mariano Reservoir, CO 3 4 5
139 Home Supply Reservoir, CO 3 4 5
140 Lon Hagler Reservoir, CO 3 4 5
141 Middle Fork South Platte River, CO 3 4 4
142 South Fork Rio Grande, CO 3 4 4
143 Elk Creek, CO 3 4 4
144 Conejos River, CO 3 4 4
145 Rio San Antonio, CO 3 4 4
146 Culebra Creek, CO 3 4 4
147 Arkansas River: Upper, CO 3 4 4
148 Tarryall Creek, CO 3 4 3
149 Flagler Reservoir, CO 3 4 3
150 Bonny Reservoir, CO 3 4 3
151 Los Pinos River, CO 3 4 3
152 Two Buttes Reservoir, CO 3 3 5
153 Holbrook Reservoir, CO 3 3 5
154 Saint Vrain Creek, CO 2 3 4
155 Thurston Reservoir, CO 2 3 3
156 South Platte River: Lower, CO 2 3 2
157 Gore Creek, CO 2 2 2
158 Taylor River, CO 2 2 2
159 Colorado River: Upper, CO 2 2 2
160 Henson Creek, CO 2 0 2
161 Big Blue Creek, CO 2 0 2
162 Cebolla Creek, CO 2 0 2
163 Arkansas River: Lower, CO 2 0 2
164 Gunnison River: Upper, CO 2 0 1
165 Lake Fork of the Gunnison, CO 2 0 0
166 Dolores River, CO 1 0 2
167 West Dolores River, CO 0 2 2
168 Elk River, CO 0 0 0
169 Eagle River, CO 0 0 0
170 San Miguel River, CO 0 0 0
171 Animas River, CO 0 0 0
172 Crystal River, CO 0 0 0
173 East River, CO 0 0 0
174 Florida River, CO 0 0 0
175 Piedra River, CO 0 0 0
176 White River, CO 0 0 0
177 San Juan River, CO 0 0 0
178 South Fork White River, CO 0 0 0
179 Hermosa Creek, CO 0 0 0



Whacking Fatties Fishing Reports
Fly fishing report and map for Colorado.

What is Whacking Fatties? Fishing reports and forecasts for ~10,000 streams and lakes and rivers across North America and the United Kingdom.

What is the goal?

To better understand fishing patterns, conditions to predict ferocity of fishable events and locations.

How do we do it?

Fishing Reports and Forecasts. Throughout every day, we create 7 day fishing forecasts for ~10,000 streams and lakes.

What is the Fatty Factor?

A 5 star rating calculated per hour over every day per stream. We create a detailed forecast for each stream whereby every hour gets a 5 star Fatty Factor rating.

How is the Fatty Factor calculated?

The Fatty Factor is calculated using a fishing success estimation model containing proprietary big data analytics. We consume data from near and real-time sources, satellites, and sensors; compile/compare, against historic datasets, to create the Fatty Factor. Location, season, and analytics improve the rating over time.

How is the Fatty Factor rated?

5 stars is the best while 0 stars is “Not Fatty”.

How to use Whacking Fatties Fishing Reports and Forecasts?

Consult the detailed stream information section of the fishing reports and forecasts for the latest weather temperatures, wind speeds, cloud cover, gauge flows, and insect hatch patterns.

What do trout eat?

Check out the hatch recommendations for each stream in the detailed stream area. Investigate the hatch recommendations if you are interested in what do trout eat.

What kind of fish can I catch?

You tell us? Rainbow trout, brook trout, lake trout, bass, carp, etc. Currently, fresh water species. Salt water fishing? Fly fishing for carp is awesome. Tell us what you are after? Steelhead, grayling, tarpon, bass, bonefish, taimen, permit, salmon fishing?

How do I use the fishing maps?

We have a vast amount of geographic data for each stream. Click on the points to get more information. Green points represent fishing access such as put-ins and take-outs. Purple points represent bridges or stream crossings whereby often Google StreetView is available. Red points represent USGS Stream Gauges. Where available, we have graphs for Predictive Hydrograph 7 days, Water Temperature, Observed Height (ft.) 7 days, Observed Discharge (cfs) 7 days, and Duration Hydrograph. The Duration Hydrograph is a graphical presentation of recent daily streamflow, plotted over the long-term statistics of streamflow for each day of the year.

Can I determine land ownership from the stream map?

Yes. Landownership data is included in the map. In the map legend, the type of ownership is shown while you hover or tap on the map. You will see public or private land. For public, it will tell you the agency such as Forest Service or State Park.

Does Whacking Fatties have private landowner information such as parcel boundaries?

Currently, we have landowner information for Montana only. If you drill down into the map, you will see parcel boundaries. Simply click on the parcel to see who owns the land and other related information.

How do I determine distance from one access to another?

In the map, the measure tool can be used to trace along a stream to measure between fishing access points.

Can I determine stream elevation?

In the fishing map, you can turn on the elevation profile for a stream. You are able to visually see how much elevation is dropped along a stream.

What other mapping data is available and useful to anglers?

We provide three different background maps: dark, light, and satellite. The light is useful for planning routes to fishing access points. The satellite is very useful for all sorts of detailed planning.

What gauges are included in the Stream Flow graph?

For each stream, we have included all gauges for the stream overlaid into one graph. This is great for analyzing flow data of the stream as a whole to help predict best fishing areas.

What is the Fatty Store?

Check out the Fatty Store for great deals on the best fishing gear available in the market. We make available only the highest quality fly fishing gear at deep discounted prices such as fly fishing rods, fly boxes, waders or wading boots, fly fishing reels, flies, and tackle. From time to time, we have promotions on fly fishing vacations, film tours, and fly fishing videos. Look for deals on fly fishing schools.

What about fly fishing forums?

We have a great fishing forum where anglers can post their own reports and pictures. At each detailed stream page, you can upload fish pictures and your own fishing reports. We encourage you to rate the stream. We are working on the capability to upload your own fishing videos.

Where do I find a professional recommended fishing guide, lodge, or fishing charter?

Whacking Fatties Pro Contributors are professionally vetted and approved. Pro Contributors provide the highest quality guided fishing experiences. Look for recommended fishing charters, lodges, fly fishing and tackle shops posted on detailed stream report pages. Fishing near me? Investigate Pro Contributors listed on specific detailed streams near you.

What is Fatty Information?

What is the best fly line? How to tie a fly? Fly lines explained? Fly fishing beginner? Fatty Information is a new section whereby we present practical fly fisherman knowledge such as fly fishing knots, fly patterns, tapered leader formulas, tippet rings, strike indicators, drift boats, nymph fishing, euro nymphing, knots for fly fishing, best fishing sunglasses, etc. Information on our favorite flies such as mop files, clouser, nymph fly, wet flies, muddler minnow, isonychia fly, mole fly, cdc and elk fly, trico fly, caddis fly, and flies for largemouth bass. As well as recommendations for best small stream fly rods. The tug is the drug!

What are Fatty Alerts?

Never miss a great day of fishing! Fatty Alerts are automated email notifications whereby you are sent an email ONLY when your favorite streams have a great forecast. First, you sign up for a Whacking Fatties account; then, choose your favorite streams to get alerts. Fatty Alerts include our long range forecast. Never miss great fishing weather or fishing forecast with Fatty Alerts. They are free!

What are we working on next?

We will be expanding to fresh water lakes for bass, carp, and other great fishing. We will be able to assist with planning the best dates and times for your next fly fishing for stripers adventure. Forecasting for salt-water locations are on the radar. Please contact us with your feedback. Tight lines!

With the goal of better understanding fly-fishing patterns and predicting location and ferocity of fishable events, Whacking Fatties presents the Fatty Factor: a fly-fishing success estimation model using proprietary big data analytics.

Whacking Fatties promotes responsible fishing via catch and release practice and water resources conservation.

Check out more:

The Fatty List: Top Daily Fishing Reports broken down by nationwide, northeast, south, midwest, and northwest fishing regions The Fatty Map: Today's Top Fishing Streams on a Map Top Professional Contributors Fishing Report Feed - find current fishing reports and updates Fatty Photo Feed