Colorado Fishing Report

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