Whacking Fatties Fly Fishing Reports and Forecasts

Colorado Fishing Report

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



Whacking Fatties Fishing Reports
Fly fishing report and map for Colorado.

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

How do we do it?

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 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 stars is the best while 0 stars is “Not Fatty”.

How to use Whacking Fatties Fishing Reports and Forecasts?

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