Environment (C30) IRS Verified DX Registered 990 on File

FRIENDS OF THE BIG SIOUX RIVER

EIN: 47-3343873 · SIOUX FALLS, SD 57104-5976 · United States · FY 2023 Data

3 out of 5 58 / 100 Based on 2+ years of filings

Financial strength (30%) 59/100

Reliability (20%) 50/100

Effectiveness (25%) 45/100

Impact (25%) 75/100

Financial data: FY 2023 · Scored 9/13/2026

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Mission Statement

To protect and restore the Big Sioux River and its watershed, improve the water quality, and educate our community to build a conservation ethic.

Financial Overview — FY 2023

$194K

Total Revenue

$119K

Total Expenses

$179K

Net Assets

N/A

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 45.2%

Fundraising Efficiency N/A

Operating Reserve 18.09x

Liability-to-Asset 2.1%

Revenue Diversification 99.7%

Compared with Peers

FY 2023

Compared with 3,996 similar organizations (United States, Environment, $100K–$1M in expenses), FY 2023.

This organization Middle half of peers (P25–P75) Peer median

Ratio	This org	Peer median	Position (P10 → P90)
Program expense ratio Program expenses / total expenses · higher is better	45.2%	82.6%	P10P90	Bottom quarter
Operating reserve Months of expenses covered by net assets · higher is better	18.1 mo	13.5 mo	P10P90	Above median
Liabilities to assets Total liabilities / total assets · lower is better	2.1%	1.2%	P10P90	Below median
Revenue concentration Share of revenue from the largest source · lower is better	99.7%	92.8%	P10P90	Below median
Revenue growth Year over year revenue growth	105.5%	8.9%	P10P90
Expense growth Year over year expense growth	52.0%	14.5%	P10P90
Surplus margin Surplus as a share of revenue	38.6%	4.0%	P10P90

Impact

2 programs

Outcome / Program	People Served	Cost / Service	# Completed	Duration
3 tons of trash were removed from local waterways by FBSR volunteers	1,000	$50.00	1,000	Per Day
Improved education about water quality and water quantity issues	5,000	$20.00	5,000	Per Day

Financial History

Year	Revenue	Expenses	Net Assets	Program %	Staff
2023	$194K	$119K	$179K	45.2%	—
2022	$94K	$78K	$105K	16.6%	—
2021	$93K	$25K	N/A	—	1

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Organization Details

EIN: 47-3343873
State: SD
City: SIOUX FALLS
ZIP: 57104-5976
Classification: C30
Category: Environment
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 2015
Foundation Code: 16
Form 990: On File

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CharityAI™ rates charities from 0 to 100 using public filings (IRS Form 990 and the equivalent registries outside the US) together with the information the charity itself provides on DonationX. Ratings are recalculated every quarter, without human bias, and shown as stars.

Four pillars

Financial strength30%

Program expense ratio, fundraising efficiency, operating reserves, liabilities and revenue diversification, compared with similar organizations.

Reliability20%

Standing with the registry, filing history, verification and how complete the profile is.

Effectiveness25%

How much goes to programs and how consistently the organization delivers them.

Impact25%

The outcomes the charity reports on DonationX: people served, cost per service and results.

Stars

★★★★★ 80–100 ★★★★☆ 60–79 ★★★☆☆ 40–59 ★★☆☆☆ 20–39 ★☆☆☆☆ 1–19

A pillar with no data counts as zero. Without impact metrics the score is capped at 59 (three stars): only the charity can supply that data.
The coverage grade (A to D) says how much filing data the score rests on; NONE means there is not enough to rate.
An organization that is not in good standing with its registry (for example a revoked tax exemption) is shown as Not rated.
"Compared with peers" places the charity's key ratios against organizations of the same country, sector and size.

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