Colorado Fishing Report

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