Colorado Fishing Report

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



What is Whacking Fatties? Fly 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 fly-fishing patterns, conditions to predict ferocity of fishable events and locations.

How do we do it?

Fly 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 fly-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 starts is the best while 0 starts is “Not Fatty”.

How to use Whacking Fatties Fishing Reports and Forecasts?

Consult the detailed stream information section of the fly-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 fly 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 fly 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 fly 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 Fly Fishing Reports broken down by nationwide, northeast, south, midwest, and northwest fly 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