Whacking Fatties Fly Fishing Reports and Forecasts

Colorado Fishing Report

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




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

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.

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.

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