Colorado Fishing Report

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