Whacking Fatties Fly Fishing Reports and Forecasts

Colorado Fishing Report

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