Whacking Fatties Fly Fishing Reports and Forecasts

Colorado Fishing Report

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