Species
1 Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
284
2 Walden Ponds Wildlife Habitat--Cottonwood Marsh/Wally Tove's Pond/Duck Pond
265
3 Waneka Lake/Greenlee Preserve
255
4 Boulder Reservoir complex--Boulder Res
239
5 Golden Ponds Park and Nature Area
239
6 Lagerman Agricultural Preserve--Lagerman Reservoir
220
7 McIntosh Lake
218
8 East Boulder Trail--Teller Lakes
215
9 Walden Ponds Wildlife Habitat--Sawhill Ponds only
211
10 White Rocks Trail area
202
11 Twin Lakes (Boulder County)
199
12 Baseline Reservoir
197
13 Jim Hamm Nature Area
197
14 Pella Crossing Open Space
196
15 Boulder Creek--75th St.
194
16 Valmont Reservoir Complex
192
17 Boulder Creek--CU East Campus
189
18 Stearns Lake
188
19 Louisville (town)
185
20 Old Saint Vrain Rd
178
21 Panama Reservoir #1
178
22 Boulder Creek--University of Colorado campus
175
23 Rabbit Mountain
174
24 Doudy Draw
172
25 South Mesa Trail
169
26 University of Colorado campus--Confluence Ponds and Skunk Creek
169
27 Lyons (town)
168
28 Mesa Trail Complex
168
29 Prince Lake #2
167
30 Gregory Canyon
166
31 Sombrero Marsh & Pond
165
32 Boulder Reservoir complex--Coot Lake
160
33 Eldorado Mountain Open Space
160
34 Bobolink Trail
158
35 Pleasant View Marsh
158
36 St. Vrain Greenway
158
37 University of Colorado Boulder--South Campus
158
38 Rogers Grove Park
153
39 Chautauqua Park
150
40 Skunk Canyon Trails
150
41 Carolyn Holmberg Preserve & Rock Creek Farms
148
42 Valmont Overlook (Legion Park)
146
43 Rocky Mountain NP--Wild Basin area
145
44 Teller Lakes South
143
45 Crane Hollow Road and ponds
142
46 Little Gaynor Lake
142
47 Waneka Lake/Greenlee Preserve--Waneka Lake only
141
48 Boulder Reservoir complex--Sixmile Reservoir
138
49 Walden Ponds Wildlife Habitat--Boulder Creek/Heatherwood Trail
138
50 Clover Basin Reservoir
137
51 Heil Valley Ranch
137
52 Ish Reservoir (Larimer/Boulder cos.)
137
53 Eldorado Canyon SP
133
54 Walker Ranch--Meyers Gulch
131
55 Boulder Valley Ranch trailhead
130
56 Terry Lake
130
57 Dodd Reservoir
129
58 Warembourg Open Space
128
59 Boulder Creek--109th St.
126
60 South Boulder Creek Trail
126
61 Mayhoffer Singletree Trail
125
62 Brainard Lake
124
63 Apple Valley Rd.
123
64 Lagerman Agricultural Preserve--Swede Lakes
122
65 Boulder Mountain Park--Bear Canyon Trail
121
66 McCall Lake
121
67 University of Colorado Boulder--Varsity Pond area
120
68 Hodgson-Harris Reservoir
119
69 Marshall Marsh
119
70 Wonderland Lake Park
118
71 Boulder Creek--Foothills Parkway & Arapahoe Ave. area
117
72 East Boulder Community Park
117
73 Eldorado Mountain Open Space--Goshawk Ridge Trail
115
74 Erie Reservoir
115
75 Sanitas Valley Trail
115
76 St. Vrain River Crossing at 63rd St.
115
77 Ball Brothers Woods (historic; closed to public)
113
78 Betasso Preserve
113
79 Hecla Lake
112
80 Boulder Mountain Park
111
81 Foothills Reservoir & McCaslin Lake area
111
82 Allenspark (town)
110
83 City of Boulder Open Space and Mountain Parks Cherryvale Office area
110
84 Green Mountain Cemetery
110
85 Hall Ranch
110
86 Waneka Lake/Greenlee Preserve--Greenlee Only
110
87 Joder Ranch
109
88 Bohn Park
108
89 Button Rock Preserve
107
90 Eldorado Mountain Open Space--Spring Brook Loop
107
91 Ward area
107
92 Meadow Park
106
93 South 66th St
105
94 Boulder Community Garden
103
95 Boulder Creek--61st St.
103
96 Gross Reservoir
103
97 Hall Ranch--South
102
98 Thomas Reservoir
102
99 Caribou Ranch Open Space
101
100 Heil Ranch--Picture Rock Trail
101