Colorado Fishing Report

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