Biologist reports logo


Rose Valley Lake
Lycoming County
Summer 2003
Sampling Gear: Night Electrofish


Fisheries Management Division personnel from Areas 3 and 4 returned to (click here for Spring 2003 report) Rose Valley Lake during the week of June 2, 2003 to set trapnets for warmwater panfish and to night electrofish for bass.

The night electrofishing catch is presented below in Table 1. The catch of largemouth and smallmouth bass during night electrofishing was about average for Rose Valley Lake with good numbers of bass in the 12 – 15 inch range. The lake was placed in the Big Bass Program in 1996 and since then the number of bass in the protected size group (12 – 14.9 inches) has increased along with a small increase in the number of bass over 15 inches as can be seen by comparing bass catch rates in Table 2.

However, catches of warmwater panfish were below expected levels probably due to the cool wet spring we were experiencing. In fact, catches of most species were actually better back during the snows in April. On a positive note, walleye continued to make a strong showing in the trapnets, again probably due to the lower than normal water temperatures. Fish of note in the trapnets were 2 muskellunge at 39 and 46.5 inches, a largemouth bass at 21 inches and 7 walleye 25 to 30 inches. The catch from the trapnets is presented below in Table 3.

Two nice walleyes from the trapnets
Two nice walleyes from the trapnets

A tub of walleyes from one trapnet
A tub of walleyes from one trapnet

Table 1. Length frequency distribution of black bass captured by night electrofishing for 2.01 hours in Rose Valley Lake on the night of June 2, 2003.

Length
(inches)
Largemouth Bass Smallmouth Bass
3   1
4 1 1
5   1
6 1 1
7    
8 4  
9 1 3
10 13 3
11 28 8
12 33 7
13 68 4
14 49 3
15 12  
16    
17 2  
18 1  
Totals 213 32

Table 2. A comparison of catch per hour (CPH) of night electrofishing for largemouth bass in Rose Valley Lake from surveys in 1984, 1991, 1992, 1997 and 2003.

  1984 1991 1992 1997 2003
CPH all Largemouth 83.8 126.3 135.5 94.5 105.8
CPH ≥ 12 inches 46.3 19.5 63.2 72.6 81.9
CPH ≥ 15 inches 8.1 1.2 2.0 6.6 7.4

A 39 inch muskellunge
A 39 inch muskellunge

Table 3. Length frequency distribution (in inches) of fish captured in 40 Pennsylvania style trapnets set in Rose Valley Lake during the week of June 2, 2003.

Length MKY WE LMB BBH YBH BG PPS YP BC CP
1           3        
2           47 1      
3     2     27 1   1  
4     3     8   1    
5     1     5        
6           30 1      
7           80 15 4    
8     1   6 155 63      
9         6 67 9 4 2  
10   1   1 11 6   12 4  
11     2   17     16    
12   1 2   19     23 3  
13     1 2 7     9    
14   1 1   2         5
15       2           3
16       5            
17   5   4            
18   6   3           3
19   6                
20   7                
21   6                
22   4                
23   4                
24                    
25   2                
26                    
27   2                
28   1                
29   1                
30   1                
///                    
39 1                  
///                    
46 1                  
Totals 2 48 14 17 68 428 90 69 10 11
Also captured were 82 golden shiners and 2 rock bass.

-- Area 3


Biologist Reports -- PFBC Home


Copyright Notice

Commonwealth of Pennsylvania Web Privacy and Security Policies